Repairing; Troubleshooting - Stihl MS 194 T Instruction Manual

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► File down the depth gauges with a flat file so
that they are level with the STIHL filing gauge

18 Troubleshooting

18.1 Troubleshooting Chainsaw
Most malfunctions have the same causes.
► Perform the following operations:
► Clean the air filter.
► Clean or replace the spark plug.
► Carry out the standard setting.
► Adjust idle speed.
► Adjust carburetor for operation at high altitude.
► Adjust carburetor for cutting at temperatures below –10°C.
► If the malfunction still exists: Take the action described in the following table.
Condition
Engine does not
start.
Engine idles errati‐
cally.
Engine stops while
idling
Poor acceleration
Saw chain does not
rotate when throttle is
opened.
Engine does not
reach maximum
power.
22
Cause
Insufficient fuel in the
tank.
Engine is flooded.
Carburetor is too hot. ► Allow chainsaw to cool down.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
Carburetor is iced up. ► Allow saw to warm up to +10°C.
The chain is over-ten‐
sioned.
Chain lubrication sys‐
tem is supplying
insufficient chain oil.
The chain brake is
engaged.
The chain is over-ten‐
sioned.
Bar nose sprocket is
blocked.
Spark arresting
screen in muffler is
dirty.
and parallel to the service mark. The STIHL fil‐
ing gauge must match the chain pitch.
► If you have any queries: Contact your STIHL
servicing dealer for assistance.

17 Repairing

17.1 Repairing the Chain Saw,
Guide Bar and Saw Chain
The chain saw, guide bar and saw chain cannot
be repaired by the user.
► If the saw, guide bar or saw chain is damaged:
Do not use your saw, guide bar or saw chain,
and contact your STIHL servicing dealer.
Remedy
► Mix fuel and refuel the chainsaw.
► Clear the combustion chamber.
► If manual fuel pump is fitted: Depress the manual fuel
pump at least 10 times before starting the engine.
► Tension the chain properly.
► Do not use the chainsaw and contact your STIHL
servicing dealer for assistance.
► Disengage the chain brake.
► Tension the chain properly.
► Clean the bar nose sprocket with STIHL resin solvent.
► Clean the spark arresting screen.
► If the park arresting screen is dirty or damaged: Con‐
tact a STIHL servicing dealer for assistance.
17 Repairing
0458-568-8321-B