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Okuma
Lawn & Garden Engine

Model # 6.5 OHV Official Okuma engine

Here are the diagrams and repair parts for Official Okuma 65-OHV engine, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 113 parts  |
Fuel Cap P54650
#85

Engine assembly diagram

Fuel cap

Part #P54650

The manufacturer no longer makes this part, and there's no substitute part

Bolt P54058
#24

Engine assembly diagram

Bolt

Part #P54058

The manufacturer no longer makes this part, and there's no substitute part

Oil Dipstick P54086
#37

Engine assembly diagram

Oil dipstick

Part #P54086

The manufacturer no longer makes this part, and there's no substitute part

Snap Ring P54032
#14

Engine assembly diagram

Snap ring

Part #P54032

The manufacturer no longer makes this part, and there's no substitute part

Valve Spring P54154
#66

Engine assembly diagram

Valve spring

Part #P54154

The manufacturer no longer makes this part, and there's no substitute part

Cylinder Head P54064
#27

Engine assembly diagram

Cylinder head

Part #P54064

The manufacturer no longer makes this part, and there's no substitute part

Piston Ring P54104
#45

Engine assembly diagram

Piston ring

Part #P54104

The manufacturer no longer makes this part, and there's no substitute part

Intake Valve P54152
#65

Engine assembly diagram

Intake valve

Part #P54152

The manufacturer no longer makes this part, and there's no substitute part

Screw P54696
#108

Engine assembly diagram

Screw

Part #P54696

The manufacturer no longer makes this part, and there's no substitute part

Lawn & Garden Equipment Engine Bolt P54186
#79

Engine assembly diagram

Lawn & garden equipment engine bolt

Part #P54186

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Repair guides for gas walk-behind mowers

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How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

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Repair difficulty
Time required
 60 minutes or less
How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower ignition coil on a flathead engine

How to replace a lawn mower ignition coil on a flathead engine

If the spark plug doesn't fire when you try to start the mower, you could have a defective ignition coil. Follow these s…

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Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your lawn & garden engines

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Top questions about Sears and Sears PartsDirect

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What are the main components of a lawn mower?

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