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'78 KZ650SR. No Spark. No Pop. No Fireworks.
- chopper1963
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04 Jul 2024 07:55 - 04 Jul 2024 07:55 #901736
by chopper1963
'78 KZ650SR. No Spark. No Pop. No Fireworks. was created by chopper1963
My current project 1978 KZ650SR is moving along. (as I push it)
Carbs are clean and re-installed. Now I need to address the electronics. Key on, known good battery, kill switch on, no obvious hacks in the harness, but ... no spark.
I pulled the cover off and the points look ok.
Suggestions welcome of where to begin probing with my meter or just buy a new set of coils and an electronic ignition ...
Random photos:
Carbs are clean and re-installed. Now I need to address the electronics. Key on, known good battery, kill switch on, no obvious hacks in the harness, but ... no spark.
I pulled the cover off and the points look ok.
Suggestions welcome of where to begin probing with my meter or just buy a new set of coils and an electronic ignition ...
Random photos:
Last edit: 04 Jul 2024 07:55 by chopper1963.
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- Wookie58
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04 Jul 2024 08:59 #901740
by Wookie58
Replied by Wookie58 on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
Voltmeter on Vdc setting
Red lead to coil feed (yellow/red) black lead to battery ground - ignition on, kill switch on should read within 0.5v of battery voltage
Now without moving the meter leads crank the engine - voltage should drop no lower than 9.5v - 10.0v
Now move the black meter lead to the switched side of the coil - when the points are closed should read close to battery voltage - rotate the engine until the points open - voltage should drop to close to zero (it is the point when you "break the ground" that the coils spark)
If that all reads ok switch meter to resistance, disconnect coils and measure both primary and secondary resistance follow manual for process and spec (I would expect 3-4 ohms on the primary and 10 to 15,000 ohms on the secondary)
Red lead to coil feed (yellow/red) black lead to battery ground - ignition on, kill switch on should read within 0.5v of battery voltage
Now without moving the meter leads crank the engine - voltage should drop no lower than 9.5v - 10.0v
Now move the black meter lead to the switched side of the coil - when the points are closed should read close to battery voltage - rotate the engine until the points open - voltage should drop to close to zero (it is the point when you "break the ground" that the coils spark)
If that all reads ok switch meter to resistance, disconnect coils and measure both primary and secondary resistance follow manual for process and spec (I would expect 3-4 ohms on the primary and 10 to 15,000 ohms on the secondary)
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04 Jul 2024 09:52 #901746
by chopper1963
Replied by chopper1963 on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
Thanks. I need to find a manual for the 1978 SR. The manual I have is for 1980 and much is different.
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04 Jul 2024 10:06 #901748
by Nessism
Replied by Nessism on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
Found this on the internet, searching "KZ650 factory service manual"
files.ecommercedns.uk/221472/1d01f011b29...a5f7d77eaa93d650.pdf
Not specific to the SR, but lots of good info about the early ignition system.
files.ecommercedns.uk/221472/1d01f011b29...a5f7d77eaa93d650.pdf
Not specific to the SR, but lots of good info about the early ignition system.
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04 Jul 2024 10:57 #901750
by gd4now
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
Replied by gd4now on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
If you are seeking a Kawasaki Service Manual that covers the D model these are the Part#s that do cover them.
99924-1001-02
blue cover
Candy Super Red B1 on cover
C1,C2,B1,B2,D1
99924-1001-03
blue cover
Candy Super Red B1 on cover
B1,B2,B3,C1,C2,C3,D1,D2
99924-1007-01
Blue cover
Luminous Dark Blue B2 on cover
B2A,D1A
99924-1007-02
blue cover
Candy Emerald Green B3 on cover
B2A,B3,C3,D1A,D2
99924-1007-03
Blue cover
Candy Emerald Green B3 on cover
B2A,D1A,B3,C3,D2,B4,C4,D3,E1,F1
99924-1028-01
dark blue or black cover
Sundance Blue H1 CSR on cover
D4,F2,H1
99924-1028-02
red cover
Ebony H2 CSR on cover
D4,F2,H1,F3,H2
99924-1028-03
Maroon cover
Ebony H2 CSR on cover
D4,F2,H1,F3,H2,F4,H3
99924-1001-02
blue cover
Candy Super Red B1 on cover
C1,C2,B1,B2,D1
99924-1001-03
blue cover
Candy Super Red B1 on cover
B1,B2,B3,C1,C2,C3,D1,D2
99924-1007-01
Blue cover
Luminous Dark Blue B2 on cover
B2A,D1A
99924-1007-02
blue cover
Candy Emerald Green B3 on cover
B2A,B3,C3,D1A,D2
99924-1007-03
Blue cover
Candy Emerald Green B3 on cover
B2A,D1A,B3,C3,D2,B4,C4,D3,E1,F1
99924-1028-01
dark blue or black cover
Sundance Blue H1 CSR on cover
D4,F2,H1
99924-1028-02
red cover
Ebony H2 CSR on cover
D4,F2,H1,F3,H2
99924-1028-03
Maroon cover
Ebony H2 CSR on cover
D4,F2,H1,F3,H2,F4,H3
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
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04 Jul 2024 11:43 #901752
by chopper1963
Replied by chopper1963 on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
How do I discern which model '78 650SR is mine?
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04 Jul 2024 12:59 #901755
by gd4now
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
Replied by gd4now on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
The frame number should help with that. Does it still have a white sticker on the neck. If so it should have a month and year build date, if it is a 78 model/year bike it is either a D or a D1A. The D1A came stock with smaller carbs as the major change in the models. Though I will not claim the attached table to be 100% correct here are frame and engine numbers I found in the past. Make of them what you wish.
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
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04 Jul 2024 14:14 #901756
by chopper1963
Replied by chopper1963 on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
Sticker on the neck says build date 9/1978.
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04 Jul 2024 14:16 #901757
by chopper1963
Replied by chopper1963 on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
Frame number: KZ650D-013726
Engine KZ650DE013885
Engine KZ650DE013885
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05 Jul 2024 06:57 #901770
by gd4now
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
Replied by gd4now on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
The build date and the frame and engine numbers would make it a 1979 KZ650 D2 and not a year earlier D1 or D1A.
1977 KZ650 B1
Pods and Denco header
OLD KAW OWNERS SMILE ALOT
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06 Jul 2024 05:56 #901814
by chopper1963
Replied by chopper1963 on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
Does anyone know what the reason was for all the different 650 D models?
And which is the service manual specific for my 1979 KZ650 D2 ?
And which is the service manual specific for my 1979 KZ650 D2 ?
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06 Jul 2024 08:52 - 06 Jul 2024 09:02 #901820
by TexasKZ
One reason is to identify the particular model.
Another is to simplify life for folks responsible for inventory, parts and such. The marketing folks might want to give that model a really catchy name like, the Hyabusa Telluride GTS/R 652. Some poor goober would have to type that long name in every time they were dealing with some tiny part, or counting bike inventories and such. Those folks would be a lot less pissed off if all they had to thpe was D2.
Anoher reason is to clearly and simply identify the model year, which is different from the calendar year. In order that dealers can have a showroom full of 1978 models on, or even a little before, January 1, 1978, Kawasaki has to start actually building those machines in 1977. The change often happens in July. Giving each model year a simple, one or two digit number makes life much less maddening for owners and parts folks alike. The D1 was the first model year production of the model D. Since Kawasaki offered new colors each year and it made constant improvements to each model, a simple designation like D1 makes getting the correct parts years later a much less complicated process.
Ocasionally, the U.S. gubmint would introduce some new safety, noise or pollution regulation, necessitating a mid-production change, or for some internal reason the company wanted to make some change, and the result is an additional designation like D2A.
Searching for a rear fender bolt for a 1979 KZ650 D2A seems less annoying than asking for a late production 1979 Kawasaki Hyabusa Telluride GTS/R 652 rear fender bolt for the updated noise-reducing fender design for the U.S. market, with the polished head.
Most of the factory service manuals have a chart on the back cover listing the exact models covered in that version of the book. Otherwise, you will have to look inside to see which ones are covered.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
Replied by TexasKZ on topic '78 KZ650SR. No Spark. No Pop. No Fireworks.
There are several reasons for the different designations.Does anyone know what the reason was for all the different 650 D models?
And which is the service manual specific for my 1979 KZ650 D2 ?
One reason is to identify the particular model.
Another is to simplify life for folks responsible for inventory, parts and such. The marketing folks might want to give that model a really catchy name like, the Hyabusa Telluride GTS/R 652. Some poor goober would have to type that long name in every time they were dealing with some tiny part, or counting bike inventories and such. Those folks would be a lot less pissed off if all they had to thpe was D2.
Anoher reason is to clearly and simply identify the model year, which is different from the calendar year. In order that dealers can have a showroom full of 1978 models on, or even a little before, January 1, 1978, Kawasaki has to start actually building those machines in 1977. The change often happens in July. Giving each model year a simple, one or two digit number makes life much less maddening for owners and parts folks alike. The D1 was the first model year production of the model D. Since Kawasaki offered new colors each year and it made constant improvements to each model, a simple designation like D1 makes getting the correct parts years later a much less complicated process.
Ocasionally, the U.S. gubmint would introduce some new safety, noise or pollution regulation, necessitating a mid-production change, or for some internal reason the company wanted to make some change, and the result is an additional designation like D2A.
Searching for a rear fender bolt for a 1979 KZ650 D2A seems less annoying than asking for a late production 1979 Kawasaki Hyabusa Telluride GTS/R 652 rear fender bolt for the updated noise-reducing fender design for the U.S. market, with the polished head.
Most of the factory service manuals have a chart on the back cover listing the exact models covered in that version of the book. Otherwise, you will have to look inside to see which ones are covered.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
Last edit: 06 Jul 2024 09:02 by TexasKZ.
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