Troy-Bilt 12159 - Manual (Page 12)

OPERATION
Fuel Primer Bulb (H, Fig. 7)
The fuel primer bulb injects fuel into the carburetor for
easier starting. Priming the engine for starting is neces­
sary uniess the engine is warm and has fuei in the tank.
IMPORTANT: After each priming squeeze or push on
the priming bulb, hesitate before repeating. This lets
fuel move efficiently by letting air re-enter the bulb.
High-Volume Priming (see Figure 8) is used when
starting a new engine for the first time, after running out
of fuel or after long storage. Use your thumb and forefin­
ger to squeeze the sides of the primer bulb in line with
the colored rib mark. As fuel enters the priming system,
the priming action will feel more firm. Squeeze the
primer bulb 6 times. (This process removes air from the
priming system.)
Standard-Volume Priming (see Figure 8) is used if the
engine is cool or has been in storage briefly, but still has
fuel in the fuel tank. To perform Standard-Volume Prim­
ing, use your forefinger to push in the bulb twice if above
55°F, or three times if below 55°F.
High-Volume
Priming Position
Figure 8: Fuel primer bulb.
Standard-Volume
Priming Position
PRE-START PREPARATION
Prior to starting the engine, make the following checks
and perform the following services;
• Disconnect the spark plug wire from the spark plug.
• The engine on-off switch must be in the OFF position.
• Check that all wires and cables are properly and se­
curely connected. It is very important that the six plastic
wrap-around ties on the handlebars be positioned as il­
lustrated in Figure 9. The control cables they help se­
cure must not be kinked or jammed in the handlebar.
• Adjust handlebar height to desired operating position
and securely tighten the handlebar knob.
• Check hardware for tightness.
• Add the oorrect fuel mixture (24 parts gasoline to 1
part two-cycle motor oil) to the fuel tank if fuel has not al­
ready been added. Fill the tank no higher than 1/2" be­
low the top of the tank.
• Adjust the equipment for tilling depth as follows:
a. Loosen tilling depth adjustment knob (A, Fig. 10).
b. Move the wheel bracket (B, Figure 10) up in rela­
tion to the height adjustment bar (C). Moving the
bracket upward sets your machine for shallower
tilling, recommended for initial use.
IMPORTANT: Do not move wheel bracket any
higher than top of adjustment bar.
c. Retighten the depth adjustment knob.
• Reconnect the spark plug wire to the spark plug.
Figure 9: Plastic ties securing control cables to handle­
bars must be located in the positions shown by arrows.
Figure 10: To adjust tilling depth, loosen knob (A) and
move wheel bracket (B) up or down in relation to height
bar (C). Retighten knob.
WARNING
Gasoline is highly flammable and its vapors are ex­
plosive. Follow these safety practices to prevent
injury from fire or explosion:
• Never fill tank if engine is running or hot from use.
Let engine and muffler cool down before refueling.
• Do not permit open flames, sparks, matches, or
smoking in the fueling area.
• Fill fuel tank outdoors in a well-ventilated area.
• Wipe up any fuel spills and move tiller away
from fumes before starting the engine.
• Use only an approved fuel container and lock it
safely away from children.
• Store fuel and the machine in a well-ventilated
area. Do not store fuel or equipment where fuel va­
pors may reach an open flame or spark, or an ig­
nition source (a hot water heater, furnace, clothes
dryer, electric motor, or the like).
• Let engine cool down before storing machine.
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