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Repair and Service Manual
FAULT TESTING
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
699322
Fuel pump faulty Repair or replace
Fuel line clogged or clamp loose Clean or replace if required
Cracked or broken fuel line Replace with new hose
Throttle lever motion restricted Check all linkages
Dirt or water in fuel line Clean lines. Replace filter
Clogged fuel filter Check and replace if required
Engine flooded Clean/or replace spark plugs
Engine fuel starved Check fuel lines, filter and pump.
Air intake tube is blocked Repair or clean
Clogged air filter Wash or replace as required
Plugged muffler or pipe Repair or replace
Low compression in engine Check and repair
ENGINE RUNS ROUGH OR LOSS
OF POWER
Dirty or clogged air filter element Replace as required
Dirty or incorrectly gapped spark plug Clean plug and set gap
Faulty ignition wiring Repair/replace correct wiring
Spark plug wire Test and replace if necessary
Incorrect valve lash Check and adjust if required
Weak or damaged valve springs Replace
Damaged intake/exhaust valves Replace
Dirt or water in fuel line Clean lines
Plugged fuel tank vent Clean or replace vent cap
Muffler damaged or plugged Repair or replace
Fuel pump vent dirty Clean and replace if required
Fuel pump has a ruptured diaphragm Replace
Low compression Check engine
Poor quality of fuel Drain and replace with correct clean fuel
Condition Possible Cause Correction
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