ERICO SBG150 Rail Grinder - Manual (Page 12)

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TROUBLE SHOOTING CHART
PROBLEM CAUSE SOLUTION
Engine will not start.
Engine will not reach full speed
and emits excessive smoke.
Engine runs and accelerates,
but will not idle properly.
Erratic idle.
Poor Acceleration.
Lacks power when throttle is
fully open.
1. No Spark
1. Wrong oil/fuel mixture.
2. Dirty air filter.
3. Carburetor out of adjustment.
Carburetor out of adjustment.
Idle speed adjustment.
1. Carburetor out of adjustment.
Too lean idle mixture.
2. Fouled spark plug.
1. Carburetor out of adjustment.
2. Dirty air filter.
Remove spark plug, clean if dirty and re-gap at 0.02”
(0.5 mm). Replace after approx. 100 hrs and/or badly
eroded. Use only resistor type spark plugs with the
same heat range.
Wrong fuel mixture, dirty air filter or unfavorable running
conditions will affect the condition of the spark plug.
1. Use brand-name fuel (min. 89 octane) and quality
2-stroke engine oil (class TD).
2. Clean or replace air filter.
3. Turn high speed adjustment “H” clockwise
Turn the Idle speed screw "T" clockwise to increase
speed, counter-clockwise to decrease. Proper idle speed
is achieved when engine idles without the drive clutch
engaging.
- If the engine hesitates or stalls when the throttle
is engaged, turn the low speed adjustment
counter-clockwise.
- If the engine is sluggish to respond and smokes,
turn the low speed adjustment clockwise until
the engine responds.
1. Adjust idle mixture screw "L". Proper idle mixture is
achieved when engine idles and accelerates smoothly.
- If the engine hesitates or stalls when the throttle
is engaged, turn the low speed adjustment
counter-clockwise.
- If the engine is sluggish to respond and smokes,
turn the low speed adjustment clockwise until
the engine responds.
2. Replace spark plug.
1. Turn high speed adjustment screw "H".
- If smoking, turn clockwise.
- If not achieving full speed, turn counter-clockwise.
2. Clean or replace air filter.
CARBURETOR ADJUSTMENTS
The carburetor is designed to provide optimum performance from the factory. The settings of
the carburetor are adjusted to ensure that the tool will deliver maximum horsepower, fuel
efficiency and operate reliably.
Before adjusting the carburetor, clean the cool air intake, the air filter and warm up the engine.
On these tools it is only possible to set the idle mixture and speed within limits. Note the
trouble-shooting chart above for instructions on when these adjustments should be made.
WARNING
Do not try to force the screws outside the range.
NOTE! If the above solutions do not solve your problem, please contact ERICO ® for service at 1-800-447-RAIL.
!