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Jacobsen GP400 Service Manual

Jacobsen GP400
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B
en 43
OPERATION 6
6.9 STARTING THE ENGINE _________________________________________________
The following procedure is for starting cold engines.
1. Ensure the FWD/REV pedal is in the neutral position, the mow switch is off, the throttle setting is in a mid
position.
2. Turn the ignition switch fully clockwise and hold until the engine starts (approximately 5-10 sec.)
3. The glow plugs are auto timed depending on the coolant temperature for operating the starter motor (This
should only take a few seconds)
4. When the engine starts, release the key immediately and it will return to the RUN position.
5. If the engine does not start, return key to the OFF position and try again.
NOTES:
If the engine fails to start after two attempts, wait 20 seconds and try again.
The starter motor should never be run continuously for longer than 30 seconds or it may fail.
If the red LED’s on the display flash whilst starting one of the safety interlock switches has not been set
correctly.
6.10 DRIVING _____________________________________________________________
Release brake - Make sure the parking brake is released before attempting to go forward or reverse.
Forward - Gently depress the top A of the FWD/REV foot pedal to reach desired ground speed.
Reverse - Gently depress the bottom B of the FWD/REV foot pedal to reach desired ground speed.
To stop - Gently return the FWD/REV foot pedal to the neutral position.
To hold the vehicle stationary on a slope it may be necessary to apply a certain amount of reverse traction.
NOTES:
Use complete foot to operate both forward and reverse.
Do not move pedal suddenly–always operate slowly and smoothly. Never move pedal violently from
forward to reverse or vice versa.
Always keep foot firmly on the foot pedal–a too relaxed foot control may result in a jerky motion.
6.11 MOWING PROCEDURE_________________________________________________
NOTE: Always remove the flag and inspect the green before mowing. Remove debris or other objects that may
damage the reels and/or Bedknives. Operators should practice mowing in a clear area to become familiar with
raising and lowering the mowing heads. They should be aware that the centre cutting head raises and lowers
slightly later than the front ones, allowing the centre cut to begin and end at the same point as the two side cuts.
Practising will help the operator become proficient at starting and stopping each pass within a foot or two of the
edge of the green. Then only one final pass around the green will be required to finish the operation.
Several factors may determine the direction of the mowing pattern, sand traps or other hazards near the green,
trees etc that can restrict where turns are made. The terrain of the green may also be a factor, but if conditions
allow, always try to mow the green in a different direction than the last time it was mowed.
1. Stop the unit just before reaching the green. Make sure the reel enable switch is in the "ON" position and
the mow / transport lever is in position 1 (mow). Proceed onto the green at mowing speed and lower the
mowing heads as the front grass catchers cross the leading edge of the green. At the end of the pass, raise
the heads as the front grass catchers cross the trailing edge of the green.
2. Always make mowing passes across the green in a straight line. DO NOT start to make the turn for the next
pass until the rear wheel is completely off the green, this will eliminate the possibility of the tires tearing the
turf during the turn.
3. Each successive pass should overlap the previous one by two or three inches (51 or 76mm) (a painted

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Jacobsen GP400 Specifications

General IconGeneral
BrandJacobsen
ModelGP400
CategoryLawn Mower
LanguageEnglish

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