– 97 –
2
Fuel injection timing is incorrect.
9
Adjust injection timing.
9
The injection timing is 0.366
rad (21°) before top dead cen-
ter.
2
Engine oil becomes thick in cold
weather and engine cranks
slow.
9
Change grade of oil accord-
ing to the weather (tempera-
ture).
2
Low compression.
9
Bad valve or excessive wear
of rings, pistons and liners
cause insufficient compres-
sion. Replace with new parts.
2
Battery is discharged and the
engine will not crank.
9
Charge battery.
9
In winter, always remove bat-
tery from machine, charge
fully and keep indoors. Install
in machine at time of use.
NOTE:
If the cause of trouble cannot be
found, consult a Yamaha dealer.
When output is insufficient
2
Carbon accumulated around
orifice of nozzle piece.
9
Clean or ifice and needle
valve, being very careful not
to damage the nozzle orifice.
9
Check nozzle to see if bad.
Replace with new parts if nec-
essary.
3
注油时机不正确
9
调节注油时机
9
注油时机为活塞头到达中心之前
的 0.366rad(21°)时
3
在寒冷的环境中发动机的燃油变
浓,且发动机的曲轴速度变慢。
9
根据天气(气温)改变燃油级别。
3
压力低
9
阀门不良,环、活塞和衬垫的过
度磨损都会造成压力不足。请更
换这些部件。
3
蓄电池未充电,发动机不转动。
9
对蓄电池进行充电。
9
在冬天,每次使用后必须要从机
器中取出蓄电池,充电后放在室
内。使用时再装入。
注意:
如果没找到发生故障的原因,请
与雅马哈经销商联系。
输出功率不足时:
3
喷嘴处的喷管周围积下碳灰。
9
清洁喷管,并用针状物清洁活
塞,请务必小心,不要损伤喷管。
9
检查喷嘴状态是否不良,需要时
更换新部件。
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