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Parts information 

No. 

Name 

Quantity 

Name 

Aym8

m8×38 double-headed 10.9 grade stud 

(zinc 

)

 

Tool: stud socket m8fixed torque: 20±2 N.m 

Thread fastening glue 

Water and oil shared sensor 

Tools: 17# socket and fixed torque wrench fixed 

torque: 14±1N.m 

9×2 EPDM rubber O-ring 

 

Cr8ei spark plug (protruding type)

 

Tool: 16# spark plug socket fixed torque: 14 ± 1 

N.m 

6.3×12×1.6 copper gasket 

 

M6×10 top pin bolt (zinc

)

 

Tool: t-sleeve-8# fixed torque: 10±1 N.m 

ZT1P58MJ intake rocker arm subassembly

 

ZT1P58MJ camshaft bearing pressure plate 

 

M5×15-5# hexagon socket head screw 

Apply thread glue, tool: 5# inner hexagon fixed 

torque: 7±1 N.m 

10 

M6×10 top pin bolt (zinc

)

 

Apply thread glue, tool: t-sleeve-8# fixed torque: 

10±1 N.m 

11 

ZT1P58MJ exhaust rocker arm subassembly

 

12 

ZT1P58MJ intake and exhaust rocker shaft 

 

13 

ZT1P58MJ camshaft sub-component-b 

 

14 

8.8×1.9 fluorine rubber O-ring 

 

15 

Gb276-6001/p5c3 deep groove ball bearings 

(nitrided)

 

 

30 

31 

29 

27 

26 

24 

23 

32 

28 

25 

Summary of Contents for ZT1P52MI

Page 1: ...1 42 ZT1P52MI Engine maintenance manual 2023 04 01...

Page 2: ...t codes on the official website of ZONTES which will not be listed in detail in this manual if the names of parts in this manual are inconsistent with the official website of ZONTES the official websi...

Page 3: ...arts etc reducing the service life It should be wiped with a non woven cloth that will not leave residues Ordinary rags may leave rags or wool that will affect assembly or cause other adverse effects...

Page 4: ...ts 21 Electric starter box cover 22 Start agency 23 Timing chain 23 Oil pump right crankcase cover 24 System components 24 Right crankcase cover 25 Oil pump 25 Oil filter 26 System components 26 Oil f...

Page 5: ...5 42 System components 40 Crankcase 40...

Page 6: ...ed sleeve head 16 and pre tighten it with a torque wrench to fix the torque the torque is 14 1 N m Cylinder compression test 1 Start the engine warm up the engine to normal operating temperature and t...

Page 7: ...ine rubber oil seal 1 7 Water seal moving ring ceramics 1 17 16 5 7 5 water plug 1 8 ZT1P58MJ water pump blade 1 18 18 2 2 4 EPDM rubber O ring 1 9 M6 10 top pin bolt zinc 1 19 Gb t 276 6000 p5c3 deep...

Page 8: ...it to the position shown in the figure below After installation measure the depth to confirm whether it is installed in place Remarks apply engine oil to the oil seal installation hole and install th...

Page 9: ...sealing ring on the water pump cover groove if the O ring is trimmed or worn replace it with a new one and finally take 4 m6 22 full threaded bolts on the hexagonal flange surface grade 8 8 zinc one...

Page 10: ...M6 10 top pin bolt zinc 1 Tool t sleeve 8 fixed torque 10 1 N m 7 ZT1P58MJ intake rocker arm subassembly b 1 8 ZT1P58MJ camshaft bearing pressure plate 1 9 M5 15 5 hexagon socket head screw 2 Apply t...

Page 11: ...Gb16674 M8 25 bolts diagonally at t rod 10 and remove the cylinder head cover cylinder head cover rubber pad and 8 14 hollow positioning pin in sequence Note when removing the cylinder head cover the...

Page 12: ...oint t turns over the marking line it cannot be rotated in the opposite direction It is necessary to turn the crankshaft clockwise two times again to re align the point 3 As shown in the picture remov...

Page 13: ...ocker arm mark E have no abnormal wear and the rollers of the intake and exhaust rocker arms rotate smoothly without abnormal noise 4 Check that the intake and exhaust springs have no cracks or abnorm...

Page 14: ...shown in the figure install the camshaft bearing pressure plate apply an appropriate amount of thread fastening glue on the surface of 1 m6x10 and 2 m5x15 bolts after screwing in pre tighten and set t...

Page 15: ...s on the side use the fixed torque wrench to tighten respectively nut 8 3 17 2 iron gasket should not be missed m8 1 25 hexagonal flange nut fixed torque 25 3 N m m6 105 hexagonal flange bolts with a...

Page 16: ...manual for disassembly and assembly cylinder head cover cylinder head cylinder head cover Cylinder head assembly refer to ZT1P52MI engine maintenance manual for disassembly and assembly cylinder head...

Page 17: ...r damaged it needs to be replaced Tensioner installation 1 Tighten the tensioner ejector rod with a one word batch rotate the one word batch clockwise while holding the tensioner ejector rod with your...

Page 18: ...pin bolt 1 Tool t sleeve 8 fixed torque 10 1 N m 4 Cylinder head gasket 1 Cannot be reused 5 Cylinder block gasket 1 Cannot be reused 6 10 14 hollow positioning pin 2 7 Oil ring combination 1 8 16 1...

Page 19: ...ton ring 1 Remove the combination of the first air ring the second air ring and the oil ring Tip To remove the piston ring open the end notch by hand and lift the other side of the ring over the top o...

Page 20: ...he piston ring are staggered for assembly the arrow on the top of the piston points to the exhaust side as shown in the figure Remarks before installing the cylinder block apply an appropriate amount...

Page 21: ...aust side do not install it backwards Electric starter box cover starter mechanism timing chain System components No Material name Quantity Remark 1 15 6 1 9 fluorine rubber O ring 1 2 16 30 9 bushing...

Page 22: ...ctric starter box cover and take out the electric starter box cover 16 30 9 bushing 15 6 1 9 fluorine rubber O ring and positioning pin Inspection 1 Check the electric starter box cover oil seal 151 3...

Page 23: ...earing etc Have no abnormal wear Install 1 Install the ZT1P58MJ electric starter gear assembly 19 4 27 8 3 6 bushing cg 78h overrunning clutch ZT1P58MJ electric starter reduction gear shaft and ZT1P58...

Page 24: ...ming chain check the timing chain if there is no sticking crack or deformation it is qualified Install 1 Put the timing chain on the timing drive gear of the crankshaft take 2 m6 10 top pin bolts and...

Page 25: ...bolt of the right crankcase cover and take out the right crankcase cover right crankcase cover gasket and positioning pin Inspection 1 check that the right crankcase cover oil seal FB22 32 7 fluorine...

Page 26: ...t the corresponding position of the right crankcase take 2 m5 15 5 inner hexagonal cylindrical screws and apply an appropriate amount of thread glue after screwing in tighten with a fixed torque torqu...

Page 27: ...MJ engine oil filter sealing ring is first inserted into the corresponding position of the oil filter and the end of the oil filter with the sealing ring is inserted into the boss at the corresponding...

Page 28: ...r fixture to prevent the rotor from rotating freely use a torque wrench or electric gun and a sleeve 17 to remove the m12 1 25 hexagonal flange surface 10 level nut and remove the 12 5 23 1 8 gasket s...

Page 29: ...mponents of the magneto stator on the corresponding position of the right crankcase cover apply an appropriate amount of thread glue on the threads of three GB70 1 M6 25 bolts and three M6 16 bolts an...

Page 30: ...sleeve 1 7 Driven wheel clutch shoe 3 18 ZT1P52MI main fixed plate 1 8 Driven wheel sliding plate 1 19 12 2 29 2 5 gasket 2 9 Fixed plate of driven wheel 1 20 12 24 2 6 Belleville spring washer 1 10 1...

Page 31: ...embly together Pinch the main sliding wheel subassembly and the ramp plate inside and remove it together with the driving wheel bushing Inspection Check whether the centrifugal roller is worn and out...

Page 32: ...d then assemble it on the crankshaft and assemble it in place Put the 12 2 29 2 5 washer and 12 24 2 6 butterfly spring washer on the crankshaft in turn and then screw the m12 1 25 hexagonal flange su...

Page 33: ...tioning pin 2 15 Gb276 6302 p5c3 deep groove ball bearings nitrided 1 5 Gb276 60 28 2rk deep groove ball bearings koyo 1 16 6 2 19 2 5 spacers 1 6 Gb276 6302 p5c3 deep groove ball bearings nitrided 2...

Page 34: ...l Assembly position Quantity Torque N m Remark Gb16674m8 40 zinc Gear case cover locking bolt 7 20 2 5 Gb5789m6 12 zinc 6204 bearing platen bolts 1 1 0 1 Apply thread glue Non standard bolt m8 25 zinc...

Page 35: ...ce Inspection 1 Check the gear case cover bearing and oil seal Turn the inner ring of the bearing by hand and the bearing turns smoothly and silently If the bearing rotation is stuck please replace th...

Page 36: ...h bearing in the gearbox install the duplex gear assembly and output gear in sequence and spray engine oil on each part in the same way Assemble the output shaft with the retaining ring fully installe...

Page 37: ...il volume Gearbox oil Routine maintenance without disassembling the gearbox 160ml Non routine maintenance disassembly of gearbox 170ml 3 After the assembly is completed wipe off the oil stains around...

Page 38: ...terial name Quantity 1 ZT1P58MJ thermostat subassembly 1 2 16 5 1 95 EPDM o ring 1 3 ZT1P58MJ right crankcase parts 1 4 ZT1P58MJ fan box cover subassembly 1 5 M6 60 hexagonal flange bolts zinc 5 6 ZT1...

Page 39: ...al flange bolts zinc and pre tighten them diagonally and then use the fixed torque wrench to fix the torque the torque is 12 1 5 N m 2 Put the no problem or brand new radiator in the corresponding pos...

Page 40: ...1P58MJ right crankcase parts 1 4 10 14 hollow positioning pin 2 5 M6 60 hexagonal flange bolts zinc 8 6 M6 105 hexagonal flange surface 9 8 grade bolts zinc 3 Crankcase Assembly M6 60 hexagonal flange...

Page 41: ...e the corresponding crankcase should be replaced Install Loctite 5900 plane sealant evenly and continuously on the joint surface of the left crankcase note if there is uneven glue application or even...

Page 42: ...42 42 M6 105 hexagon flange face 9 8 grade M6 60 hex flange boltsM8 25...

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