Troubleshooting - Graco GrindLazer 270 Repair Manual

Troubleshooting

Troubleshooting
Problem
Engine will not start
Engine operates, LineDriver will not
move forward or reverse
Engine operates, LineDriver moves
slowly in forward or reverse
Engine shuts off when operator exits
LineDriver
Engine continues to run when opera-
tor exits LineDriver and parking
brake is not set
Engine misses during turns and for-
ward and reverse changes
Uneven cut
Not cutting
Engine runs for short time and stops Fuel flow restriction
Unit vibrates excessively
Groove is not even when using dia-
mond blades
Engine bogs down while
grinding
Not removing material while cutting
36
Cause
Engine switch is OFF.
Engine is out of gas.
Engine oil level is low.
Spark plug cable is disconnected or dam-
aged.
Engine is cold.
Fuel shutoff lever is in OFF position.
Oil is seeping into combustion chamber.
480/630 Models Only: Emergency
shut-off switch is OFF.
480/630 Models: Not attached to Line-
Driver.
Low hydraulic oil
Wheel release is open
Low hydraulic oil. Parking brake is set.
Wheel release is open
Safety switch
Safety switch
Engine oil low
Unbalanced tire pressure
Cutters are worn or damaged
Cutters not centered on drum.
Bearings are starting to wear out.
Cutters are worn or damaged.
Drum rod is not level with drum adjustment
wheels.
Depth of cut is too deep.
Unit is moving too fast.
Cutters are worn.
Solution
Turn engine switch ON.
Refill gas tank (see engine manual.
Try to start engine. Fill oil is necessary (see
engine manual).
Connect spark plug cable or replace spark
plug.
Use engine choke.
Move shutoff lever to ON position.
Remove spark plug. Pull starter 3 or 4 times.
Clean or replace spark plug. Start engine.
Keep sprayer upright to avoid oil seepage.
Turn emergency shut-off switch ON.
Attach LineDriver to unit.
Fill with Mobil 1 (15W-50) synthetic oil
Close; hand tighten.
Fill with Mobil (15W-050) synthetic oil.
Release parking brake.
Close; hand tighten.
Set parking brake
Adjust and set parking brake. Replace safety
switch and/or any connecting wires.
1. Consult engine manual for proper oil.
2. Keep engine oil full to avoid nuisance
stalls caused by Oil Alert sensing low oil
levels.
Check tire pressure to make sure both tires
are at 60 ft-lb.
Replace cutters.
See engine manual
Reassemble drum with cutters centered on
drum.
Replace bearings.
Replace cutters.
Adjust drum adjustment wheels so wheels
and hex rod are level.
Raise drum.
Slow down.
Replace cutters.
3A0102D