Makita EB7650TH Instruction Manual - Page 19

Fault location Fault Engine not starting or with difficulty System Ignition system Fuel supply Compression Warm start problems Engine starts but dies Mechanical fault Fuel supply Insufficient performance Several systems may simultaneously be affected Observation Ignition spark O.K. No ignition spark Fuel tank filled No compression when pulled over Starter not engaging Tank filled ignition spark existing Tank filled Engine idling poor Cause Fault in fuel supply or compression system, mechanical defect STOP-switch operated, wiring fault or short circuit, spark plug or connector defective, ignition module faulty Incorrect choke position, carburetor defective, fuel supply line bent or blocked, fuel dirty. Cylinder bottom gasket defective, crankshaft seals damaged, cylinder or piston rings defective or improper sealing of spark plug Broken starter spring, broken parts inside of the engine Carburetor contaminated, have it cleaned Incorrect idling adjustment, carburetor contaminated Fuel tank vent defective, fuel supply line interrupted, cable or STOP-switch faulty Air filter contaminated, carburetor contaminated, muffler clogged, exhaust duct in the cylinder clogged Operating time Item Before After operation lubrication Daily (10h) 30h 50h Inspect/clean Engine oil Replace *1 Tightening parts (bolt, nut) Inspect Fuel tank Clean/inspect Drain fuel Throttle trigger/ throttle lever Check function Stop control lever/ stop switch Check function Low-speed rotation Inspect/adjust Air cleaner Clean Ignition plug / plug cord Inspect Cooling air duct Clean/inspect Fuel pipe Inspect Replace Fuel filter Clean/replace Clearance between air intake valve and air discharge valve Adjust Oil tube Inspect Engine overhaul Carburetor Drain fuel *1 Perform initial replacement after 20h operation. *2 For the 200 operating hour inspection, request Authorized Service Agent or a machine shop. *3 After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor. 200h Shutdown/ Corresponding rest Page 9 16 18 - *3 18 - 12 13 17 17 18 18 *2 - 18 *2 - *2 - *2 - *3 18 19