lower end vacuum/pressure test PSI?

[Mi duckdown]

Do not have my manuals handy. Got sometimers

 

[Mi duckdown]

I know I don't have serial number. 25 hp merc. 1980. helping my bud cant drive 200 miles for books

 

[Mi duckdown]

bump

 

[Fun Times]

Note: Before filling gear case, apply 10-12 psi of air pressure at the vent hole. Pressure should not drop for 5 minutes while alternately applying a 2-3 pound force to the top of the shift shaft in the fore and aft direction.

http://1manual.com/Mercury manuals/Service Manual PDFs/TwoStroke/826883r2/6a.pdf

Hope this helps you, good luck.

 

[Mi duckdown]

Fun Times. Thank YOU Very Much. saved me a lot of gas to help a friend. Everyone Here should copy the special tools.
In fact what Fun Times Posted. All of it. Thanks Fun.

 

[Fun Times]

fun times. Thank YOU Very Much. saved me a lot of gas to help a friend. Everyone Here should copy the special tools.

Is that all you need or do you need a complete manual?

 

[Mi duckdown]

No. but thanks. I have manuals. from 1963 to 2000. the older ones are the best. Thanks again Fun Times for your Help.

 

[Fun Times]

No. but thanks. I have manuals. from 1963 to 2000. the older ones are the best. Thanks again Fun Times for your Help.

Glad I could help.

 

[MH Hawker]

i have been using this as a standard test

15 lbs pressure,5-6 lbs vacuum for at least 20 minutes. Use soapy water to find leak's if it doesn't hold pressure.

 

[achris]

5-6lb of vacuum??? Wasn't aware vacuum could be bought by the pound, I thought it was sold by length, inches... 5-6 inches of vacuum..

Just remeber to turn/spin all the shafts while pressure and vacuum are applied...

Chris.....

 

[Mi duckdown]

Thanks, achris about vacuum. somtimers.