125
6.17 Spark plug inspection and replacement
To obtain a good performance, the gap between the electrodes of the spark plug must be correct and it
must be free from deposits. Comply with the instructions below:
1)
remove the spark plug cap and clean off the dirt around the spark plug itself
2)
remove the spark plug with a 13/16-inch wrench
3)
visually inspect the spark plug and replace it if it is very worn or soiled, if the washer is in a bad
condition or if the electrode is worn
4)
measure the gap between the spark plug electrodes with a wire gauge. Correct the distance as
required, by carefully bending the side electrode. The gap between the electrodes should be 0.7-
0.8 mm.
5)
Carefully install the spark plug by hand to avoid screwing it in badly.
6)
Once the spark plug has been housed, tighten it with a 13/16-inch spark plug wrench so as to
compress the washer.
NEW SPARK PLUG= tighten 1/2 of a turn once the spark plug has been housed, so as to
compress the washer
ORIGINAL SPARK PLUG= tighten 1/4-1/8 of a turn once the spark plug has been housed, so
as to compress the washer
RECOMMENDED SPARK PLUGS
BPR6ES (NGK)
W20EPR-U (DENSO) (Honda indications)
A spark plug that is too loose can overheat and damage the engine. The tip thread could be
damaged if the spark plug is tightened too much.
SPARK PLUG WRENCH
SIDE ELECTRODE
WASHER
Summary of Contents for BiBi 850 HE
Page 6: ...5 Chapter 1 General information...
Page 10: ...9 1 6 Performances H I A B L F E C G...
Page 19: ...18 Chapter 2 Safety information...
Page 24: ...23...
Page 25: ...24 2 3 2 Warning command danger identification and instruction signs...
Page 40: ...39 Chapter 3 Machine Description...
Page 41: ...40 3 1 Structure of the machine 2 4 5 6 7 9 10 11 13 14 19 27 28 15 18...
Page 42: ...41 View from A 20 22 21 23 24...
Page 43: ...42 12 8 25 16...
Page 44: ...43 17 2 26...
Page 45: ...44 3...
Page 56: ...55...
Page 59: ...58 Chapter 4 Instructions for use...
Page 68: ...67...
Page 69: ...68 For more information refer to Engine Use maintenance manual...
Page 71: ...70...
Page 72: ...71 For more information refer to Engine Use maintenance manual...
Page 91: ...90 Chapter 5 Emergency procedures...
Page 94: ...93 Chapter 6 Maintenance...
Page 105: ...104 Electrical panel casing Battery 1...
Page 116: ...115...
Page 117: ...116...
Page 118: ...117...
Page 119: ...118...
Page 120: ...119...
Page 123: ...122...
Page 124: ...123...
Page 125: ...124...
Page 133: ...132...
Page 136: ...135 HATZ ENGINE...
Page 137: ...136...
Page 138: ...137...
Page 139: ...138 Chapter 7 Demolition...
Page 141: ...140 APPENDICES...
Page 142: ...141 Appendix 1 Declaration of conformity...
Page 144: ...143 MANDATORY ROUTINE INSPECTIONS Date Observations Seal Signature...
Page 157: ...156 Appendix 4 Hydraulic diagram Appendix 5 Circuit diagram...