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Polaris · Shim-adjusted overhead-cam four-stroke twin, wet sump, gearbox shares engine oil, shaft drive

Scrambler 850

Library entry covers 2014-2024

44 factory 48 guideline

Published source

Polaris 2022 Scrambler 850 Owner's Manual (P/N 9940174), Maintenance Interval Chart

Factory owner's handbook. Covers 2022 Polaris Scrambler 850 owner's manual P/N 9940174 (ATV); other model years have their own manuals and were not compared.

92 items for a 2019 model, grouped by interval the way a factory chart is laid out.

How this bike is built (what the schedule is based on)
Engine cycle
Four-stroke
Engine lubrication
Wet sump (oil in crankcase)
Oil filtration
Replaceable cartridge or spin-on filter
Valve gear
Overhead cam, shim adjusted (incl. desmo)
Ignition
Electronic (CDI / transistor / ECU)
Charging
Alternator / stator with rectifier
Battery
Wet cell (flooded lead-acid, needs topping up)
Fuel system
Fuel injection
Cooling
Liquid cooled
Primary drive
Gear or chain inside engine, shares engine oil
Gearbox oil
Shares engine oil
Clutch control
Automatic or semi-automatic
Final drive
Shaft
Front suspension
Telescopic fork
Rear suspension
Swingarm, single shock / cantilever
Front brake
Disc, hydraulic
Rear brake
Disc, hydraulic
Wheels
Cast / alloy, tubeless
Sidecar
No sidecar
Maintenance schedule

2019 Polaris Scrambler 850

On the road: every 200 mi

1 item
  • Check engine oil level
    Pre-ride / on the road
    Guideline

    Each fuel stop on old machines. Dry sump: check the tank hot, engine idling or just stopped, per your manual.

On the road: every 300 mi

2 items
  • Check lights, horn, brake light switches
    Pre-ride / on the road
    Guideline
  • Check tire pressures
    Pre-ride / on the road
    Guideline

On the road: every 500 mi

1 item
  • Check coolant level
    Pre-ride / on the road
    Guideline

Every 10 h or 100 mi or 1 month

1 item
  • Brake pad wear (inspect)
    Brakes
    Factory

    Factory: Maintenance interval chart (whichever comes first): 10 hours, 1 months, 100 miles (160 km). Inspect periodically. XU: perform more often for vehicles subjected to severe use. D: have an authorized Polaris dealer or other qualified person perform this.

Every 20 h or 200 mi or 1 month

1 item
  • Battery (check, clean, test)
    Ignition and electrics
    Factory

    Factory: Maintenance interval chart (whichever comes first): 20 hours, 1 months, 200 miles (320 km). Check terminals; clean; test.

Every 25 h or 250 mi or 1 month

3 items
  • Demand drive fluid (break-in change)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 25 hours, 1 months, 250 miles (400 km). Break-in fluid change. XU: perform more often for vehicles subjected to severe use.

  • Rear gearcase oil (break-in change)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 25 hours, 1 months, 250 miles (400 km). Break-in fluid change. XU: perform more often for vehicles subjected to severe use.

  • Transmission fluid (break-in change)
    Primary and gearbox
    Factory

    Factory: Maintenance interval chart (whichever comes first): 25 hours, 1 months, 250 miles (400 km). Break-in fluid change. XU: perform more often for vehicles subjected to severe use.

Every 50 h or 500 mi or 3 months

2 items
  • General lubrication
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 3 months, 500 miles (800 km). Lubricate all fittings, pivots, cables and so on. XU: perform more often for vehicles subjected to severe use.

  • Shift linkage (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 3 months, 500 miles (800 km). Inspect.

Every 50 h or 500 mi or 6 months

5 items
  • Drive belt (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 500 miles (800 km). Inspect ducts for proper sealing and air leaks; inspect belt and replace as needed.

  • Front and rear suspension (lubricate)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 500 miles (800 km). Lubricate. XU: perform more often for vehicles subjected to severe use.

  • Throttle body intake duct (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 500 miles (800 km). Inspect ducts for proper sealing and air leaks.

  • Throttle release switch (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 500 miles (800 km). Inspect; adjust; lubricate; replace if necessary. XU: perform more often for vehicles subjected to severe use.

  • Steering (lubricate)
    Front end
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 500 miles (800 km). Lubricate. D: have an authorized Polaris dealer or other qualified person perform this.

Every 50 h or 500 mi

1 item
  • Shocks (inspect)
    Rear suspension and frame
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 500 miles (800 km). Inspect for leaks, loose joints and wear. XU: perform more often for vehicles subjected to severe use.

Every 100 h or 600 mi or 12 months

2 items
  • Spark plug (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 600 miles (1000 km). Inspect; replace as needed. XU: perform more often for vehicles subjected to severe use.

  • Fuel system (check, dealer)
    Fuel and air
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 600 miles (1000 km). Cycle the key to pressurize the fuel pump; check for leaks at the fill cap, fuel lines and rail, and fuel pump. D: have an authorized Polaris dealer or other qualified person perform this.

Every 1,000 mi or 6 months

1 item
  • Inspect tire tread, sidewalls and date codes
    Wheels and tires
    Guideline

Every 50 h or 1,000 mi or 6 months

3 items
  • Cooling hoses (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 1000 miles (1600 km). Inspect for leaks. XU: perform more often for vehicles subjected to severe use.

  • Cooling system (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 1000 miles (1600 km). Inspect coolant strength seasonally; pressure test the system yearly.

  • Radiator (inspect, clean)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 50 hours, 6 months, 1000 miles (1600 km). Inspect; clean external surfaces. XU: perform more often for vehicles subjected to severe use.

Every 100 h or 1,000 mi or 6 months

2 items
  • Engine oil and filter (change)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 6 months, 1000 miles (1600 km). Change the oil and filter. XU: perform more often for vehicles subjected to severe use.

  • Oil lines and fasteners (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 6 months, 1000 miles (1600 km). Inspect for leaks and loose fittings. XU: perform more often for vehicles subjected to severe use.

Every 100 h or 1,000 mi or 12 months

5 items
  • Engine mounts (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 1000 miles (1600 km). Inspect. XU: perform more often for vehicles subjected to severe use.

  • Exhaust pipe and muffler (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 1000 miles (1600 km). Inspect.

  • Wiring (inspect)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 1000 miles (1600 km). Inspect for wear, routing and security; apply dielectric grease to connectors exposed to water, mud and so on. XU: perform more often for vehicles subjected to severe use.

  • Clutches, drive and driven (inspect)
    Primary and gearbox
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 1000 miles (1600 km). Inspect; clean; replace worn parts. D: have an authorized Polaris dealer or other qualified person perform this.

  • Wheel bearings (inspect)
    Wheels and tires
    Factory

    Factory: Maintenance interval chart (whichever comes first): 100 hours, 12 months, 1000 miles (1600 km). Inspect; replace as needed. D: have an authorized Polaris dealer or other qualified person perform this.

Every 200 h or 2,000 mi or 2 years

4 items
  • Demand drive fluid (change)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 200 hours, 24 months, 2000 miles (3200 km). Change fluid (normal use). XU: perform more often for vehicles subjected to severe use.

  • Rear gearcase oil (change)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 200 hours, 24 months, 2000 miles (3200 km). Change fluid. XU: perform more often for vehicles subjected to severe use.

  • Transmission oil (change)
    Primary and gearbox
    Factory

    Factory: Maintenance interval chart (whichever comes first): 200 hours, 24 months, 2000 miles (3200 km). Change fluid. XU: perform more often for vehicles subjected to severe use.

  • Brake fluid (change)
    Brakes
    Factory

    Factory: Maintenance interval chart (whichever comes first): 200 hours, 24 months, 2000 miles (3200 km). Change every two years. D: have an authorized Polaris dealer or other qualified person perform this.

Every 250 h or 2,500 mi

1 item
  • Shocks (replace)
    Rear suspension and frame
    Factory

    Factory: Maintenance interval chart (whichever comes first): 250 hours, 2500 miles (4000 km). Replace shocks. XU: perform more often for vehicles subjected to severe use. D: have an authorized Polaris dealer or other qualified person perform this.

Every 3,000 mi or 12 months

8 items
  • Check throttle cable(s) free play and return
    Fuel and air
    Guideline
  • Adjust automatic / semi-automatic clutch
    Primary and gearbox
    Guideline
  • Check steering head bearing adjustment
    Front end
    Guideline
  • Inspect fork seals, stanchions and fork boots
    Front end
    Guideline
  • Check footrests, pegs, rear brake and gear lever pivots
    Rear suspension and frame
    Guideline
  • Grease and check center / side stand and springs
    Rear suspension and frame
    Guideline
  • Check brake pads and discs
    Brakes
    Guideline
  • Check wheel bearings for play
    Wheels and tires
    Guideline

Every 300 h or 3,000 mi or 3 years

1 item
  • Spark arrestor (clean)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 300 hours, 36 months, 3000 miles (4800 km). Clean out, or remove the clean-out plug.

Every 4,000 mi or 12 months

1 item
  • Inspect, clean and gap spark plugs
    Engine
    Guideline

Every 5,000 mi or 12 months

2 items
  • Change engine oil
    Engine
    Guideline

    Pre-1970 machines: many owners run non-detergent or classic-spec oil with no filter, so short intervals matter. Dry sump: drain the tank and the crankcase/sump, flush the tank and clean the feed and return screens.

  • Replace oil filter
    Engine
    Guideline

Every 500 h or 5,000 mi

1 item
  • Valve clearance (inspect, adjust)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 500 hours, 5000 miles (8000 km). Inspect; adjust as needed. XU: perform more often for vehicles subjected to severe use.

Every 6,000 mi or 12 months

8 items
  • Inspect coolant hoses and clamps
    Engine
    Guideline
  • Clean / inspect air filter
    Fuel and air
    Guideline

    Mesh or oiled foam: clean and re-oil. Paper: blow out or replace. Some very early machines have no filter at all.

  • Check charging voltage and regulator / cut-out
    Ignition and electrics
    Guideline
  • Check final drive for leaks and bearing play
    Final drive
    Guideline
  • Check swingarm bushes for play
    Rear suspension and frame
    Guideline
  • Inspect rear shocks for leaks and damping
    Rear suspension and frame
    Guideline
  • Lubricate control cables and lever pivots
    Controls and cables
    Guideline
  • Lubricate speedometer / tachometer cables, check drive
    Controls and cables
    Guideline

    A dry speedo cable whips the needle and eventually kills the instrument.

Every 10,000 mi or 2 years

1 item
  • Compression test (or leak-down)
    Engine
    Guideline

Every 12,000 mi or 2 years

5 items
  • Replace air filter element
    Fuel and air
    Guideline
  • Synchronize throttle bodies
    Fuel and air
    Guideline
  • Change final drive (rear drive) oil
    Final drive
    Guideline
  • Clean and grease rear suspension linkage
    Rear suspension and frame
    Guideline
  • Grease swingarm pivot
    Rear suspension and frame
    Guideline

Every 15,000 mi or 3 years

1 item
  • Change fork oil
    Front end
    Guideline

    Some early telescopic forks are grease filled or use very small oil quantities. Check your manual.

Every 15,000 mi or 4 years

1 item
  • Check valve clearances (shim adjusted)
    Engine
    Guideline

Every 16,000 mi or 4 years

1 item
  • Replace spark plugs
    Engine
    Guideline

Every 20,000 mi or 4 years

3 items
  • Lubricate drive shaft splines / check U-joint
    Final drive
    Guideline
  • Repack / replace steering head bearings
    Front end
    Guideline

    Many old machines use loose balls in cups and cones. Taper roller conversions are common.

  • Repack / replace wheel bearings
    Wheels and tires
    Guideline

    Cup-and-cone and taper roller hubs need periodic repacking and adjustment.

Every 24,000 mi or 4 years

1 item
  • Replace fuel filter
    Fuel and air
    Guideline

Every 25,000 mi or 6 years

1 item
  • Replace swingarm bushes / bearings
    Rear suspension and frame
    Guideline

Every 30,000 mi or 6 years

1 item
  • Rebuild forks: seals, bushes, springs
    Front end
    Guideline

Every 20 h or 1 month

1 item
  • Fuel system (check for leaks)
    Fuel and air
    Factory

    Factory: Maintenance interval chart (whichever comes first): 20 hours, 1 months. Turn the key on to pressurize the fuel pump; check lines and fittings for leaks and abrasion.

Every 25 h or 1 month

1 item
  • Engine oil and filter (break-in change)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 25 hours, 1 months. Break-in oil and filter change. XU: perform more often for vehicles subjected to severe use.

Every 6 months

1 item
  • Clean battery terminals, check charge and strap
    Ignition and electrics
    Guideline

Every 2 years

4 items
  • Replace coolant
    Engine
    Guideline
  • Inspect wiring, bullet connectors and ground points
    Ignition and electrics
    Guideline
  • Inspect frame, welds and lugs for cracks
    Rear suspension and frame
    Guideline
  • Replace brake fluid
    Brakes
    Guideline

Every 4 years

3 items
  • Replace fuel lines
    Fuel and air
    Guideline

    Old rubber and modern ethanol fuel do not mix well.

  • Inspect brake hoses; replace old rubber
    Brakes
    Guideline
  • Rebuild calipers and master cylinders (seals)
    Brakes
    Guideline

Every 5 years

1 item
  • Coolant (replace)
    Engine
    Factory

    Factory: Maintenance interval chart (whichever comes first): 60 months. Replace coolant (50/50 extended life coolant). XU: perform more often for vehicles subjected to severe use.

Every 6 years

1 item
  • Replace tires on age (regardless of tread)
    Wheels and tires
    Guideline

No interval set

9 items
  • Air box sediment tube (drain)
    Engine
    Factory

    Factory: Maintenance interval chart: daily. drain deposits when visible.

  • Coolant level (check)
    Engine
    Factory

    Factory: Maintenance interval chart: daily. check level daily; change coolant every two years.

  • Headlight aim
    Engine
    Factory

    Factory: Maintenance interval chart: as needed. adjust as needed.

  • Headlights and taillights (check)
    Engine
    Factory

    Factory: Maintenance interval chart: daily. check operation; apply dielectric grease if replacing.

  • Pre-ride inspection
    Engine
    Factory

    Factory: Maintenance interval chart: pre-ride. inspect and adjust as needed: steering, front suspension, rear suspension, tires, brake fluid level, brake lever travel, brake system, wheels and fasteners, CV boots, frame fasteners, engine oil level, winch (if equipped).

  • Toe adjustment
    Engine
    Factory

    Factory: Maintenance interval chart: periodically. inspect periodically; adjust as needed. D: have an authorized Polaris dealer or other qualified person perform this.

  • Air filter main element (inspect)
    Fuel and air
    Factory

    Factory: Maintenance interval chart: weekly. inspect; replace as needed. XU: perform more often for vehicles subjected to severe use.

  • Air filter pre-filter (inspect, clean)
    Fuel and air
    Factory

    Factory: Maintenance interval chart: daily. inspect; clean often; replace as needed. XU: perform more often for vehicles subjected to severe use.

  • Power steering unit (inspect)
    Front end
    Factory

    Factory: Maintenance interval chart: daily, if equipped. inspect daily, clean often.

Guideline lines: Intervals here are general guidelines for the machine's era and layout, compiled for this app. They are not factory manual figures. Check your workshop manual, and edit any interval in the bike's Schedule tab.

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