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Offline Moto_Man63

Discovered Anti-Freeze Leak
« on: August 08, 2021, 05:35:58 PM »
So when I was replacing my exhaust pipe this weekend I found a anti-freeze leak when I removed the rear hatch above the motor.   I tried to tighten this bolt but it just spun and never tightened.   What is the purpose of this, is it some type of cooling system bleeder?   Should it tighten?
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2017 Z500, Twin Air Pre-Filter and Filter, Super ATV Flip Up Windshield and Rear Window
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Offline NMKawierider

Re: Discovered Anti-Freeze Leak
« Reply #1 on: August 08, 2021, 05:57:08 PM »
Yes, they are just threaded bolts with seal washers used to bleed air off the top end when filling. They should not just spin. Says it's stripped and can blow right out of there. Best get a new thermostat cover and plug....and gasket.
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2015 Z Force 800 53/Trail EPS
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage |7- 9.7" GPS Systems | Bandit Springs Rear & Gen-3 Shocks Front | Cage Chop Mod

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Offline Moto_Man63

Re: Discovered Anti-Freeze Leak
« Reply #2 on: August 09, 2021, 11:58:59 AM »
Thank you sir, always great info from this forum.
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2017 Z500, Twin Air Pre-Filter and Filter, Super ATV Flip Up Windshield and Rear Window
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Offline Moto_Man63

Re: Discovered Anti-Freeze Leak
« Reply #3 on: June 08, 2026, 09:25:16 AM »
Was looking through the service manual for Z500 and I don't see part numbers.   Anybody have part number for this thermostat / bleeder screw assembly?
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2017 Z500, Twin Air Pre-Filter and Filter, Super ATV Flip Up Windshield and Rear Window
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Offline NMKawierider

Re: Discovered Anti-Freeze Leak
« Reply #4 on: June 08, 2026, 01:54:08 PM »
Quote from: Moto_Man63 on June 08, 2026, 09:25:16 AM
Was looking through the service manual for Z500 and I don't see part numbers.   Anybody have part number for this thermostat / bleeder screw assembly?
Wouldn't be in the service manual but it looks like it isn't sold separately from the head...and its over 700 bucks so,,if it were me I would pull it, drill it larger and tap it for a larger bolt/plug. Get the right size drill,tap and plug though. Otherwise you are looking at another head. Might get a used one on ebay.
 
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2015 Z Force 800 53/Trail EPS
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage |7- 9.7" GPS Systems | Bandit Springs Rear & Gen-3 Shocks Front | Cage Chop Mod

My Videos On YouTube
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Offline Mogleybear

Re: Discovered Anti-Freeze Leak
« Reply #5 on: June 09, 2026, 07:02:00 AM »
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2019 Cforce 800XC
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Offline NMKawierider

Re: Discovered Anti-Freeze Leak
« Reply #6 on: June 09, 2026, 09:07:29 AM »
Dang that looks like it. For 11-bucks I sure would try it.
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2015 Z Force 800 53/Trail EPS
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage |7- 9.7" GPS Systems | Bandit Springs Rear & Gen-3 Shocks Front | Cage Chop Mod

My Videos On YouTube
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Offline Mogleybear

Re: Discovered Anti-Freeze Leak
« Reply #7 on: June 09, 2026, 09:34:33 AM »
Quote from: NMKawierider on June 09, 2026, 09:07:29 AM
Dang that looks like it. For 11-bucks I sure would try it.

That was kind of my thought as well.
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2019 Cforce 800XC
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