Maintenance
Introduction
WARNING: Read and understand the safety
chapter before you carry out any
maintenance work on the product.
WARNING: The start/stop switch
automatically returns to run position. In order
to prevent unintentional starting, the spark
plug cap must be removed from the spark
plug when assembling, checking and/or
performing maintenance.
WARNING: Always wear approved
protective gloves and protective goggles or
a visor.
Note: The user must only carry out the maintenance and
service work described in this Operator's Manual. More
extensive work must be carried out by a servicing
dealer.
Carburettor adjustment
Due to existing environmental and emissions legislation
your chain saw is equipped with movement limiters on
the carburetor adjuster screws. These limit the
adjustment possibilities to a maximum of a 1/2 turn.
1/2
1/2
Your Zenoah product has been designed and
manufactured to specifications that reduce harmful
exhaust fumes.
Function
• The carburetor governs the speed of the engine via
the throttle trigger. Air and fuel are mixed in the
carburetor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance
from the product.
• The setting of the carburetor means that the engine
is adapted to local conditions, for example the
climate, altitude, fuel and the type of 2-stroke oil.
• The carburetor has three adjustment controls: L (low
jet speed), H (high jet speed) and T (idle adjustment
screw).
T
H
L
• The L- and H-jets are used to adjust the supply of
fuel to match the rate that air is admitted, which is
controlled with the throttle. If they are screwed
clockwise the air/fuel ratio becomes leaner (less fuel)
and if they are turned anti-clockwise the ratio
becomes richer (more fuel). A lean mixture gives a
higher engine speed and a rich mixture gives a lower
engine speed.
• The T-screw regulates the throttle setting at idle
speed. If the T-screw is turned clockwise this gives a
higher idle speed; turning it anti-clockwise gives a
lower idle speed.
Basic settings and running in
The basic carburetor settings are adjusted during testing
at the factory.
CAUTION: Avoid running at a too high
speed during the first 10 hours.
CAUTION: If the saw chain rotates while it
idles the T-screw must be turned anti-
clockwise until the saw chain stops.
Recommended idle speed: 2700rpm
To adjust the carburetor
When the product has been "run-in" the carburetor
should be finely adjusted. The fine adjustment should be
carried out by a qualified person.
Note: Fine tuning may be required if the chainsaw, after
changing the type of fuel, performs differently during
start, acceleration, maximum speed etcetera.
320 - 005 - 27.09.2017
25
Summary of Contents for GZ4350
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Page 92: ...114 GZ4350 87 114 A A B C D C D 92 320 005 27 09 2017...
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Page 94: ...114 A B 98 104 94 320 005 27 09 2017...
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Page 96: ...3 m 10 ft 129 96 320 005 27 09 2017...
Page 97: ...Zenoah 129 cm L T PITCH D D 2 mm PITCH D D 2 mm 320 005 27 09 2017 97...
Page 98: ...1 2 A 98 320 005 27 09 2017...
Page 99: ...3 4 5 6 122 7 8 9 320 005 27 09 2017 99...
Page 101: ...1 2 3 4 5 1 Zenoah Zenoah 0 C 32 F 1 2 3 4 5 3 m 10 ft 320 005 27 09 2017 101...
Page 102: ...1 2 3 1 2 102 320 005 27 09 2017...
Page 103: ...1 2 3 4 5 6 7 1 2 320 005 27 09 2017 103...
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Page 106: ...1 2 1 2 3 3 4 1 2 106 320 005 27 09 2017...
Page 107: ...3 a b 2 3 4 a 1 3 b 5 a 1 3 b 2 1 2 320 005 27 09 2017 107...
Page 108: ...110 1 2 3 135 1 2 3 108 320 005 27 09 2017...
Page 109: ...1 2 2 1 1 3 1 1 2 2 2 1 1 4 45 90 1 3 5 cm 1 5 2 in 2 3 4 320 005 27 09 2017 109...
Page 110: ...5 1 10 6 129 110 320 005 27 09 2017...
Page 111: ...1 2 3 4 5 2 3 2 54 cm 1 in 2 54 5 08 cm 1 2 in 6 7 320 005 27 09 2017 111...
Page 112: ...1 0 C 1 2 1 2 2 5 C 112 320 005 27 09 2017...
Page 113: ...1 2 1 2 1 2 Zenoah L H T T H L L H 10 2700 L T H L H 1 2 10 99 320 005 27 09 2017 113...
Page 114: ...3 4 L 5 L 6 7 H H H H 1 2 H 4 L H 1 2 0 6 mm 0 024 in 1 114 320 005 27 09 2017...
Page 115: ...2 3 4 5 1 99 2 3 1 2 320 005 27 09 2017 115...
Page 116: ...3 4 5 1 2 1 2 1 2 STOP 1 116 320 005 27 09 2017...
Page 117: ...2 3 1 2 30 cm 12 3 320 005 27 09 2017 117...
Page 118: ...4 3 5 6 7 119 1 117 2 3 4 118 119 1 2 2 1 2 118 320 005 27 09 2017...
Page 119: ...3 4 119 1 2 3 1 2 3 4 Zenoah 320 005 27 09 2017 119...
Page 120: ...1 2 3 4 5 1 2 3 4 5 1 2 1 2 1 2 0 65 mm 3 0 65 mm 0 025 128 A B 120 320 005 27 09 2017...
Page 121: ...A B Zenoah 130 130 1 122 2 3 4 4 mm 5 32 min 4 mm 5 32 320 005 27 09 2017 121...
Page 122: ...C 130 A B C 121 1 2 1 2 122 320 005 27 09 2017...
Page 123: ...3 4 5 GZ4350 87 1 3 4 20 cm 8 2 1 A B A B 320 005 27 09 2017 123...
Page 124: ...A B 1 2 3 4 1 2 3 4 5 4 mm 1 2 3 124 320 005 27 09 2017...
Page 125: ...4 1 a b 13 15 15 16 18 1 2 3 4 5 320 005 27 09 2017 125...
Page 126: ...112 0 6 mm 0 024 in 0 65 mm 126 320 005 27 09 2017...
Page 127: ...320 005 27 09 2017 127...
Page 259: ...SP33G 4 8 mm 586 93 34 01 0 65 mm 30 80 H30 505 69 81 27 85 320 005 27 09 2017 259...