Makita BBX7600 Owners Manual - Page 18

Fault location Fault Engine not starting or with difficulty Warm start problems Engine starts but dies Insufficient performance System Observation Cause Ignition system Fuel supply Compression Mechanical fault Fuel supply Several systems may simultaneously be affected 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 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 ٤ Engine oil Replace ٤*1 Tightening parts (bolt, nut) Inspect ٤ Fuel tank Clean/inspect ٤ Drain fuel Throttle lever Check function ٤ Stop switch Check function ٤ Low-speed rotation Inspect/adjust ٤ Air cleaner Clean ٤ Ignition plug Inspect ٤ Cooling air duct Clean/inspect ٤ Inspect ٤ Fuel pipe Replace Fuel filter Clean/replace ٤ Clearance between air intake Adjust valve and air discharge valve 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/ Corres-po rest nding P 10 15 17 ̆ ٤*3 17 ̆ 12 13 16 16 17 17 ٧*2 ̆ 17 ٧*2 ̆ ٧*2 ̆ ٧*2 ̆ ٤*3 17 18