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SERVICE INFORMATION

HCA-2500

8

3. Remove the limiter cap tool from the limiter cap
turning the tool clockwise, leaving the limiter cap in
place.

4. Screw threaded end of limiter cap tool 91019 into
centre hole of the other limiter cap anticlockwise until
the limiter cap is come out from the mixture needle
completely. Remove the limiter cap from limiter cap
tool turning clockwise. Screw thread of limiter cap
tool 91019 into centre hole of previous limiter cap to
pull out completely.

5. Turn idle adjust screw anticlockwise and set the
screw until the tip to just contact throttle plate. Then
turn idle adjust screw 1 1/2 turns clockwise. Install
removed cleaner lid.

6. Turn L and H mixture needle clockwise until lightly
seated, and then turn both mixture needles
anticlockwise following turns.

L mixture needle :  2 1/4,

                    H mixture needle :  3 1/4

NOTE : If needles are forced during seating, damage
to carburettor may occur.

2-2 Presetting idle adjust screw, L mixture needle and H mixture needle (continued)

91019 

91019 

Summary of Contents for HCA-2500

Page 1: ...sed on the latest products information available at the time of publication 1 CONTENTS page 1 SERVICE INFORMATION 2 1 1 Specification 2 1 2 Technical data 3 1 3 Torque limits 4 1 4 Special repairing m...

Page 2: ...Automatic rewind Rope diameter x length mm in 3 0 x 1000 0 12 x 39 4 Fuel Type Premixed two stroke fuel Mixture ratio 50 1 2 Petrol Minimum 89 octane petrol RON Two stroke air cooled engine oil ISO L...

Page 3: ...coil resistance 200 400 Secondary coil resistance k 1 3 1 8 Pole shoe air gaps mm in 0 30 0 40 0 012 0 016 Ignition timing at 3000 r min BTDC 29 at 8000 r min BTDC 28 at 9000 r min BTDC 12 Carburettor...

Page 4: ...ne Crankcase M 5 75 85 7 5 8 5 65 75 Cylinder M 5 75 85 7 5 8 5 65 75 Cylinder cover M 4 35 45 3 5 4 5 30 40 Muffler M 5 55 65 5 5 6 5 50 55 Top guard M 5 25 35 2 5 3 5 22 30 Regular bolt nut and scre...

Page 5: ...inder bore When plating is worn and aluminium can be seen B Piston outer diameter Min 33 91 1 335 C Piston pin bore Max 8 030 0 3161 D Piston ring groove Max 1 6 0 063 E Piston ring side clearance Max...

Page 6: ...Removing and installing piston pin Use 8 mm dia adapter 9 897705 11520 Bearing tool Removing and installing con rod small end needle bearing 10 897712 04630 2 pin wrench Removing and installing pawl c...

Page 7: ...roceed to the next step 2 2 C After adjusting carburettor according to the steps 2 2 and 2 3 the limiter cap s must be installed on L and or H mixture needle s to comply with Emission Directive 2 2 Pr...

Page 8: ...p tool 91019 into centre hole of previous limiter cap to pull out completely 5 Turn idle adjust screw anticlockwise and set the screw until the tip to just contact throttle plate Then turn idle adjust...

Page 9: ...ed in the range of 2 600 to 2 800 r min NOTE Engine speed must be allowed to stabilize a minimum of 20 seconds after each adjustment of L mixture needle to assure accurate tachometer readings 5 Turn H...

Page 10: ...on Directive 9 Start engine again and make sure engine runs at idle speed in the range of 2 400 to 3 200 r min and at WOT engine speed in the range of 9 000 to 10 500 r min Also make sure blade would...

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