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Popular Makita DCS642120 Manual Pages
Owners Manual - Page 3
...B= 125 hours, and A= 300 hours. Important instructions for daily and periodic maintenance..... 35 Service, spare parts and guarantee 35-36 Troubleshooting 36 Extract from www.makitausa. With the purchase of components 17 Technical data 18 Mounting the guide bar and saw chain 19-20 Chain brake 21 Fuel / Refuelling 22-23 Chain lubrication 24 Starting the engine 25 Stopping the engine...
Owners Manual - Page 5
... which may cause the guide bar to people who are experienced in well-ventilated areas. 15. Keep all parts of your body away from the saw chain when the engine is recommended to lend the chain saw only to move
suddenly upward and backward, which could result in the owner's manual maintenance instructions, should be avoided. Keep...
Owners Manual - Page 16
...not attempt any maintenance or repair work not
described in this manual. Keep the chain sharp. e. WARNING! 7.
Chain saws with catalytic converter
take longer to
prevent the saw .
Only properly trained professionals should work performed
by your MAKITA service shop only.
34
WARNING! 5. a blowdown area, fig. 35). Maintenance and Repair
Never operate a chain saw to cool off...
Owners Manual - Page 17
... Sprocket guard 12 Identification plate 13 Decompression valve (option)
14 Starter grip 15 Adjusting screws "S-L-H" for carburetor 16 I/STOP-switch 17 Choke lever 18 Throttle lever 19 Throttle stopper 20 Hand guard 21 Fuel tank cap 22 Fan housing with starting assembly 23 Oil tank cap 24 Guide bar 25 Chain 26 Adjusting screw for oil pump...
Owners Manual - Page 18
... be JASO FC or ISO-L-EGD)
50:1
Chain brake
engages manually or in case of kickback
Sprocket pitch
inch
3/8
Number of teeth
Z
7
Chain type (see the Extract from the spare-parts list)
Weight (fuel tank empty, without chain and guide bar)
lbs 13.9 13.9 13.9
1) For models without decompression valve
WARNING:
This chain saw unless you have extraordinary cutting needs and...
Owners Manual - Page 21
...be turned over whenever replacing the chain. IMPORTANT: NEVER run the saw with wood (see "Testing chain brake")!
The brake is installed to get longer during use 2-3 chains alternatively. ALWAYS release the chain brake before starting the work!
2
1
1
Engaging the chain brake (braking)
If the kickback is strong enough the sudden acceleration of the guide bar combined with the inertia...
Owners Manual - Page 22
... the chain and guide bar. e.
Chain oil
Use an oil with clear water. The chain oil BIOTOP sold by MAKITA is...MAKITA synthetic two-stroke engine oil and a mixture ratio of time. This will decrease. In addition, a long service life and reliable operation with oil.
mix 50 parts..., see a doctor immediately! Eyes can cause starting problems and damage the engine.Purchase only that amount of ...
Owners Manual - Page 24
... is on the bottom side of the housing.
Otherwise the service life of the oil pump the oil guide groove at the crank case (2) and the oil inlet bore in the guide bar (3) must be reduced. Check the oil feed rate as described below: Start the chain saw approx. 6" (15 cm) above a trunk or the ground...
Owners Manual - Page 25
...
Push the decompression valve (2) (option).
Hold the tubular handle tightly with a fast and forceful movement until you hear the first ignition. Move the I /STOP ignition switch to a MAKITA service center. Depress ...
7
that the chain is started it must be put in such a way that the guide bar is free of your hand until it com- IMPORTANT: If the chain does not stop ...
Owners Manual - Page 34
...grip until the starting mechanism catches.
...guide.
Unscrew the screws on and fasten it. CAUTION: To prevent eye injury, always wear eye protection when cleaning the filter with compressed air. Do not use your thumb to damage the short-circuit wire and the ignition wire.
Be careful not to hook in the decompression valve and activate the chain... guide and remove.
Replacing/cleaning...
Owners Manual - Page 35
... if this instruction manual. Please contact your nearest MAKITA service center.
35 Page
General
Chain saw Catalytic muffler
Check at an authorized service center Check at an authorized service center
Turn over to maintain good cooling air flow. Replace if damaged.
33
Before each start
Saw chain
Inspect for damage and sharpness Check chain tension
27-28 21
Guide bar
Check...
Owners Manual - Page 36
...Malfunction in the wiring, plug cap or spark plug defective. All repairs covered by a MAKITA service center. Switch on the chain
Oil tank empty. Cylinder base packing ring defective, radial shaft packings defective, cylinder or piston rings defective Spark plug does not seal. Decompression valve dirty
Insufficient power
Several systems Engine is filled
dies immediately...
Owners Manual - Page 37
... collector, cpl. MAKITA-No. Qty. Denomination
1 445 038 655 1 445 045 655 1 445 050 655 1 445 050 665 1 445 060 655 1 445 070 455 1
Sprocket nose bar (15"), .058" Sprocket nose bar (18"), .058" Sprocket nose bar (20"), .058" Sprocket nose bar (20"), .050" Sprocket nose bar (24"), .058" Solid nose bar (28"), .058"
2 528 099 660 1 Saw chain 3/8" for...
Parts Breakdown - Page 11
...-060 SPRING RING C12x1
2
68
001-131-150 DECOMPRESSION VALVE
1
69
908-805-235 SCREW W/SPRING WASHER, DPC7331
4
70
038-114-152 SPRING W/THREADED INSERT, DCS6401
1
71
965-531-160 GASKET, DPC6410
1
72
038-120-021 CRANKSHAFT, DCS6401
1
73
962-210-121 NEEDLE CAGE, DCS6421
1
73
962-210-019 NEEDLE CAGE
1
74
960...
Parts Breakdown - Page 14
.... PARTS BREAKDOWN PARTreSv 5B_1R2E/1A2/K20D11OWN
DCS642120 EM4251
Products with the newest version on top not indented. Tech Bulletin Fig. Description
Q'ty Unit
Notes
301
940-827-000 ANGLED SCREW DRIVER
1
302
941-719-131 UNIVERSAL WRENCH
1
303
944-340-001 SCREW DRIVER
1
305
445-050-665 20" GUIDE BAR .050, 3/8"
1
307
523-102-072A 20" CHAIN , .050-3/8,DCS6401-20...
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