Makita EK7651H User Manual

25
Troubleshooting
Before making a request for repairs, check a trouble for yourself. If any abnormality is found, control your machine according to the description
of this manual. Never tamper or dismount any part contrary to the description. For repairs, contact Authorized Service Agent or local dealership.
State of abnormality Probable cause (malfunction) Remedy
Engine does not start
Failure to operate primer pump Push 7 to 10 times
Low pulling speed of starter rope Pull strongly
Lack of fuel Feed fuel
Clogged fuel lter Clean
Broken fuel tube Straighten fuel tube
Deteriorated fuel Deteriorated fuel makes starting more difcult.
Replace with new one. (Recommended
replacement: 1 month)
Excessive suction of fuel Set throttle lever from medium speed to high
speed, and pull starter handle until engine
starts. Once engine starts, cutting disc starts
rotating. Pay full attention to cutting disc.
If engine will not start still, remove spark plug,
make electrode dry, and reassemble them as
they originally are. Then, start as specied.
Detached plug cap Attach securely
Contaminated spark plug Clean
Abnormal clearance of spark plug Adjust clearance
Other abnormality of spark plug Replace
Abnormal carburetor Make request for inspection and maintenance.
Starter rope cannot be pulled Make request for inspection and maintenance.
Abnormal drive system Make request for inspection and maintenance.
Contaminated clutch and around parts Clean
Engine stops soon
Engine speed does not increase
Insufcient warm-up Perform warm-up operation
Choke lever is set to “
” although engine is
warmed up.
Set to “ON ”
Clogged fuel lter Clean
Contaminated or clogged air cleaner Clean
Abnormal carburetor Make request for inspection and maintenance.
Abnormal drive system Make request for inspection and maintenance.
Cutting disc does not rotate
Stop engine immediately
Loosened cutting disc-tightening bolt Tighten securely
Abnormal drive system Make request for inspection and maintenance.
Main unit vibrates abnormally
Stop engine immediately
Broken, bent or worn cutting disc Replace cutter blade
Loosened cutting disc-tightening bolt Tighten securely
Abnormal drive system Make request for inspection and maintenance.
Cutting disc does not stop immediately
Stop engine immediately
High idling rotation Adjust
Detached throttle linkage Make request for inspection and maintenance.
Abnormal drive system Make request for inspection and maintenance.
Engine does not stop
Run engine at idling, and set choke lever
to “
”
Detached connector Attach securely
Abnormal electric system Make request for inspection and maintenance.
When the engine does not start after warm-up operation:
If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.

Makita EK7651H Specifications

General

Depth	780 mm
Width	310 mm
Height	455 mm
Weight	12900 g
Product type	Petrol abrasive saw
Product color	Black, Blue
Sound power level	104.6 dB
Cutting speed	80 m/s
Blade diameter	350 mm
Idle speed (max)	4300 RPM
Cutting depth (90º)	122 mm
Sound pressure level	92.7 dB
Sound level uncertainty	2.5 dB
Engine type	4-stroke engine
Engine power	4.1 hp
Uncertainty K	2 m/s²
Fuel tank capacity	1.1 L
Vibration emission	2.7 m/s²
Engine displacement	75.6 cm³
Arbor diameter	20 mm
Idle speed (min)	9100 RPM
Anti-vibration system	Yes
Engine number of strokes	4
Air filtration stages quantity	5
Motor power	4.5 hp
Power source	Gasoline
Motor rated power	3.3 kW