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4.4 Cleaning the air filter.
4.4.1 Dirty air filters reduce engine power, increase fuel
consumption and make starting more difficult, So if there
is a notic
e
able loss of engine power carry out the following
steps.
4.4.1.1 Stop the machine.
4.4.1.2 Undo cover screw (1) clockwise and remove
the air filter cover (2).
4.4.1.3 Remove the foam filter (3) from the housing
and inspect it. If it is dirty wash in warm soapy
water, rinse until clear of soap then allow to fully
dry. If is damaged replace with a new one.
4.4.1.4 Refit the cover and tighten the cover screw
(1).
4.5 Carburettor - General Information:
4.5.1 Your carburettor comes from the factory with a standard setting. The setting
provides optimum fuel-air mixture under most operating conditions.
N.B. We advise that you do not adjust the carburettor. If you suspect the carbure
t
tor
is mal-adjusted or faulty contact your dealer f
or
assistance.
4.5.2 The high speed screw alters the engine power output and the maximum off
road engine speed.
4.5.3 If the setting is too lean, there is a risk of engine damage due to insufficient
lubrication and overheating.
4.6 Checking the spark plug.
4.6.1 If the engine is down on power, difficult to start or runs poorly at idle speed,
first check the spark plug.
4.7 Remove the spark cover and HT lead (1), remove plug (2) using supplied box
spanner.
4.8 Check electrode gap (3) (0.6-0.7mm) and adjust if necessary.
4.9 Rectify the problems which have caused the spark plug (3) to become fouled and
give unfavourable running conditions.
4.9.1 Too much oil in the fuel mixture.
4.9.2 Dirty air filter.
4.10 If the spark plug comes with a detachable adapter nut (1), screw it on thread
(2) firmly, then press the cap firmly onto the spark plug.
Page 12
Ver 2
Summary of Contents for HYB33
Page 1: ...BACK PACK BLOWER Model HYB33 User Manual...
Page 2: ......
Page 14: ...Page 15 Ver 2 7 SPECIFICATIONS...