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ADJUSTMENTS    4

17

4.7

MOW SPEED______________________________________________________________

Cutting quality is better at speeds well below the transport
speed of the mower. An initial mow speed of five to six mph
is set at the factory and should be satisfactory for most
cutting conditions. Local turf conditions however may
respond better to a different speed. 

To set mow speed, loosen jam nut (A),  and adjust stop
screw up to reduce speed, down to increase speed. Tighten
nut to hold adjustment in place.

Figure 4G

4.8

BELT ____________________________________________________________________

Inspect and adjust new belt after first ten hours of operation.
Adjust every 100 hours thereafter. 

Adjust alternator pulley so belt deflects 1/4” to 5/16” (6 -8
mm) with a 20 lb. push at midpoint between pulleys. See
engine manual.

If tension is incorrect, loosen alternator mounting bolts (B)
and adjust alternator until proper belt tension is achieved.

Figure 4H

4.9 BRAKES _________________________________________________________________

Adjust brakes after replacing or servicing brake assembly,
or if pedal travel becomes excessive.

1.

When installing new brake pads, burnish pads by
driving mower at mowing speed while applying a slight
pressure on brake pedal for about 5 seconds. Release
and repeat five times before making the final
adjustment.

2.

Fully loosen adjusting nut (E).

3.

Disconnect brake return spring (See Item 14,
Illustration 7.1)
 at caliper.

4.

By hand, pull cable behind adjusting nut (C) away from
pedal until brake pads just contact brake disk. Thread
adjusting nut (C) up until it contacts the mounting plate.
Tighten nut (E) to lock adjustment in place. Torque nut
(E) to 20 ft lb (27 Nm). Do not overtorque or turn cable.

5.

Connect brake return spring. Repeat for second cable.

6.

If brakes wear beyond point where they can be
adjusted by the cable, move brake bracket into second
set of holes provided (D),  and complete adjustment
procedure.

7.

Start mower and check operation of brakes. Park
mower on an incline (approx. 16.7° slope) and engage
parking brake. Brake must prevent mower from rolling.
Adjust nut (C) as required.

Figure 4I

A

LF002

1/4” TO 5/16” 
(6 TO 8 MM) 

B

LF012

C

E

D

D

Содержание 67958 - LF 3800

Страница 1: ...to delivery to the customer You may wish to keep a copy in your customer file Do Not Remove the Safety Operation Manual or Parts Maintenance Manual from the tractor For additional information not inc...

Страница 2: ...Safety Notes 4 CONTROLS 2 1 Icons 5 2 2 Controls 7 2 3 Control Panel 9 2 4 Operator Alerts 10 SET UP 3 1 General 11 3 2 Initial Inspection 11 3 3 Reels 12 3 4 Operating Checks 12 3 5 Interlock System...

Страница 3: ...shields discharge deflectors or other protective devices securely fastened in place 12 Never disconnect or bypass any switch 13 Do not change the engine governor setting or overspeed the engine 14 Car...

Страница 4: ...enance should always be performed by a qualified technician If additional information or service is needed contact your Authorized Jacobsen Dealer who is kept informed of the latest methods to service...

Страница 5: ...nd what they represent Learn the location and purpose of all the controls and gauges before operating this mower Read Manual High Low Engine Throttle Mower Rotation 2 WD 4 WD Lock Unlock Forward Rever...

Страница 6: ...al quality parts 8 Do not use on slopes greater than 22 4131828 Total Hours 1 10 0 0 0 0 0 A Tilt Steering Lever B1 Parking Brake Lock B2 Parking Brake Release C Parking Brake D Mow Speed Stop E Tract...

Страница 7: ...ease pedal to slow mower and stop F Traction Pedal Reverse Press rear of pedal down for reverse travel Release pedal to slow mower and stop Allow mower to come to a complete stop before reversing dire...

Страница 8: ...The controller is located under the rear hood directly behind the operator s seat It is equipped with LEDs to aid in monitoring and troubleshooting the electrical system of the mower See Parts Mainte...

Страница 9: ...switch to engage four wheel drive Press rear portion of switch to return to two wheel drive S Light Switch Controls operation of work lights Press front of switch to turn lights on Press rear portion...

Страница 10: ...2 Engine Oil Pressure alarm sounds for 5 seconds then beeps once every three seconds and oil pressure light comes on Oil pressure low Stop mower immediately lower implements and shut off engine Inspe...

Страница 11: ...transport 2 Inspect paint and decals for damage or scratches Decals provide important operaing and safety information Replace all missing or hard to read decals 3 All fluids must be at the full level...

Страница 12: ...embly to the reel frame using one 3 8 16 x 1 3 4 screw G spacer H lockwasher J and 3 8 16 hex nut K e Insert hair pin L and adjust down pressure Section 4 6 3 4 OPERATING CHECKS_______________________...

Страница 13: ...e off between each test Test 1 Represents normal starting procedure The operator is seated parking brake is engaged the operator s feet are off the pedals and the reel switch is OFF The engine should...

Страница 14: ...e point where the reel or bedknife can be corrected by the lapping process they must be reground 4 Proper reel to bedknife adjustment is critical A gap of 0 001 to 0 003 0 025 to 0 076 mm must be main...

Страница 15: ...oid excessive tightening or damage may occur to bedknife and reel blades Reels must turn freely Figure 4C 4 4 CUTTING HEIGHT _________________________________________________________ Note Always make...

Страница 16: ...arefully place motor and its hoses away from the cutting unit To prevent contamination and damage to internal components cover or cap off bearing housing cavity R 4 Remove cap M on lift arm Unfasten r...

Страница 17: ...____________________________________________ Adjust brakes after replacing or servicing brake assembly or if pedal travel becomes excessive 1 When installing new brake pads burnish pads by driving mow...

Страница 18: ...RSE SPEED ______________________________________________ Forward and reverse speeds are adjusted at the traction pedal Set forward speed before adjusting reverse To adjust forward speed 1 Make sure dr...

Страница 19: ...th lift arm at 17 adjust switch I up or down until switch contacts close Secure switch in this position 7 Repeat procedure for lift arm on opposite side 8 Start engine and check that reels turn off wh...

Страница 20: ...Nm 75 8 4 100 11 3 107 12 1 143 16 1 9 16 18 ft lb Nm 92 124 122 165 129 174 172 233 1 4 28 in lb Nm 85 9 6 115 13 0 120 13 5 163 18 4 5 8 11 ft lb Nm 113 153 151 204 159 215 211 286 5 16 18 in lb Nm...

Страница 21: ...filter Bleed fuel lines 2 Air cleaner dirty 2 Inspect and replace air filter 3 Injectors fuel pump 3 Consult engine manual 4 Engine problem 4 Consult engine manual Engine stops 1 Fuel tank empty 1 Fil...

Страница 22: ...e true For example to start the mower the Mow Switch must be off lamp 8 off while the Neutral Start Switch lamp 12 Brake Switch lamp 6 and Fuel Valve Hold coil lamp 27 must be on Controller Functions...

Страница 23: ...that not all switches are located on the instrument panel The traction pedal reel lift limit and brakes are controlled by small reed switches mounted on the frame of the mower If an input lamp does no...

Страница 24: ...m 3 Lift Cylinders 4 Lift Arm Pivot 5 Brake Pedal Pivot 6 Traction Pedal Pivot 7 Ball Joint 8 Steering Pivot 9 Steering Cylinder 10 Axle Pivot F2 100 Hours 11 Reel Bearing Cavity 12 Front Roller 13 Re...

Страница 25: ...el gauges and warning lights Operation of all control switches Reel Arm Limit switch For pinched or rubbing wires Hydraulic System _______________ Check Hydraulic oil level For pinched or rubbing hose...

Страница 26: ...ipment from Jacobsen is built to exacting standards ensured by ISO 9001 and ISO 14001 registration at all of our manufacturing locations A worldwide dealer network and factory trained technicians back...

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