Husqvarna 340, 345, 346XP,350, 351, 353 Hand grip heater on model 346XPG, 351G, 353G - removal

Repair instructions

Hand grip heater on model 346XPG, 351G, 353G – removal

No heating or heating only in front hand grip

•Front hand grip – troubleshooting

1

Remove the three bolts that secure the cover over the front hand grip. Disconnect the leads from the switch and generator and measure the resistance of the hand grip heater, which should be 3–4 ohm. Replace the front hand grip if the resistance is higher.

2

Reconnect the leads and refit the cover.

3

Push the switch back into place and reconnect the leads.

4

Bolt the cover back onto the hand grip.

•Generator – troubleshooting

1

Remove the cylinder cover and cover from the front hand grip. Disconnect the black lead from the generator and connect a multimeter between it and a clean area on the cylinder. The multimeter should show a resistance of 0.9–1.3 ohm. If the reading is higher or lower, replace the generator, see “Re- placing the generator”.

2

Reconnect the lead and refit the hand grip cover and cylinder cover.

•Switch – troubleshooting

1

Carefully free the switch and frame from the front hand grip using a screwdriver.

2

Disconnect the leads from the switch and connect a multimeter to it. The meter should read over

1000 ohm when the switch is in the “0” position. The meter should read no higher than 0.1 ohm with the switch in the “1” position. Replace the meter if the readings are outside these limits.

Rear hand grip heater not working

•Rear hand grip heater – troubleshooting

1

Remove the cylinder cover, air filter and cover from the rear hand grip.

2

Disconnect the red lead from the heater and connect a multimeter between it and the black earth lead that is bolted to the bottom of the carburettor on the clutch side of the saw. The meter should read 0.7–1.2 ohm. If the reading is higher replace the heater element.

3

Remove the air filter, throttle pushrod, rubber diaphragm and carburettor, see “Carburettor – removal”.

4

Remove the bolt from the plate at the base of the carburettor to release the lead for the heater element.

5

Unscrew the three bolts from the front hand grip and remove the cover to reveal the leads. Discon- nect the red lead.

18 – English