Chapter 1 – General information / Technical specifications
Service Manual AJP PR3/PR4 1 - 48
5mm hex head screw and nut
5 (0,5)
5mm screw
4 (0,4)
6mm hex head screw and nut
10 (1,0) 6mm screw
9 (0,9)
8mm hex head screw and nut
22 (2,2) 6mm screw with phalange (8 mm
head)
9 (0,9)
10mm hex head screw and nut
34 (3,5) 6mm screw with phalange (8mm
head) and nut
12 (1,2)
12mm hex head screw and nut
54 (5,5) 8mm screw with phalange and nut
26 (2,7)
10mm screw with phalange and nut
39 (4,0) 12mm screw with phalange and nut
50 (5,0)
Torque specifications listed below are important for the screws. The remaining must be tightened to
the clamp values listed above.
Notes:
1. Applying a locking agent to the screw - LOCTITE 240 (medium resistance)
2. Apply oil to the thread and the surface of the phalange.
3. Apply clean engine oil to the O-ring.
4. Grease the thread and the surface of the phalange.
Note:
Reading the dimensions of the screws:
M6 – Screw with metric thread M6;
M6x16 – Screw with metric thread M6 and 16mm length;
M6x16 (x1) - Screw with metric thread M6, 16mm length and 1mm pitch
Not all the screws have all the specified measures. Only a few of them were specified to facilitate
identification.
ENGINE
Item
QTY Dimensions
(mm)
Torque
N.m (kgf.m) Note
Maintenance:
Oil filter cover / drain crankcase oil
1
M36
15 (1,5)
-
Rotor cover screws / oil filter
2
M5
5 (0,5)
-
Synchronization hole cover
1
M14
6 (0,6)
4
Cover of the Crankshaft flywheel screw
1
M28
8 (0,8)
4
Hole valve cover
4
M36
15 (1,5)
3
Locknut adjustment of the valves (IN/EX)
2
M6
14 (1,4)
-
Spark plug
1
M12
18 (1,8)
-
Lubrication:
Screws to fix the oil pump
2
M6
12 (1,2)
-
Cover screws of the pump rotors
2
M4
3 (0,3)
-
Pump sprocket cover screws (240)
2
M5
5 (0,5)
-