Makita UC3520A Technical Information

P 2 /10
Repair
[2] LUBRICATION
As illustrated in Fig. 1, to protect parts and product from unusual abrasion;
1) Apply Makita grease N. No.2 to the portions designated with the black triangle.
2) When replacing Oil pump complete, apply a little amount of Chain oil to the portions designated with the gray triangle.
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Lubricating Mechanism
Fig. 2
[1] NECESSARY REPAIRING TOOLS
CAUTION: Remove the chain blade, guide bar from the machine for safety before
repair/ maintenance ! Take off chain oil from oil tank !
1) Put the machine on a work bench as illustrated in Fig. 2, then separate Housing (R) from Housing (L) by removing
nine 4x18 Tapping screws.
Note: Housing (R) can be separated without removing Sprocket.
Important: Do not remove Oil tank cap in this step.
2) The parts marked with * and ** can now be replaced. (Fig. 2)
The parts marked with ** are components of lubricating mechanism.
DISASSEMBLING
*Brake switch
*O Ring 6
*Crank
O Ring 6 may be
removed together
with Housing (R)
in this step.
*Main switch *Power supply cord
Tapping screw
4x18 (9 pcs)
**Oil pump complete
Sprocket
**Oil tank
**Oil tube
**Oil tank cap
Housing (L)
Housing (R)
1R269 Bearing Extractor Removing ball bearings
DescriptionCode No. Use for
Bearing Box
Cam
Crank
Gear room (Apply about 3g.)
The portion that contacts 56 Crank
Pin portion that reciprocates in Oil pump complete
Spur gear 43
49
52
56
Oil pump complete
Fig. 1
Item No. Description Portion to lubricate
49
52
56

Makita UC3520A Specifications

General

Power source	AC
Chain pitch	3/8 \
Chain speed	13.3 m/s
Product color	Black, Blue
Automatic oiling	Yes
Chain bar length	350 mm

Weight and Dimensions

Width	436 mm
Height	244 mm
Length	200 mm
Weight	3800 g