It's time to buy a new one. Or you can search the net for "Air Gun repair" and have it fixed. But it may cost more than it's worth.
Most likely it has a blown seal.
Are you talking about a Gun or a Rifle? Please post the question again, except this time please add the model number, you will find it on the barrel. As far as I know Daisy doesn't make a 2006 10 pump BB Gun. They do make several single pump air rifles. However Crosman does make a multi pump Air gun, the Crosman American Classic. It this what you are asking?
Daisy started making air rifles in 1895
Most "PUMP" air guns use the for-arm (Forward Handle) to pump the air gun.
Clarence Hamilton
If it's a recent Daisy or even some older Daisy's I would start with Daisy (See the link below) Daisy has some parts. OR: you can do a search on the web for "Air Gun Repair" and locate someone near you to repair the Daisy. OR: you can see the link below for a list of shops.
Your question is unclear.. but i will do my best to answer you the best possible. There are two possible interpretations of what i THINK your asking me."Can you pump a Daisy Powerline 880 40 times?"or"Should you pump a Daisy Powerline 880 40 times?"Yes, you CAN pump it 40 times... but it causes severe internal damage to the gun's firing mechanism. It can cause the gun to malfunction and not work properly.
I suggest you go online and do a search for 'Air gun repair." and locate someone who fixed Daisy's.
I've gone through several air gun catalogues and have been unable to locate a Daisy model 170 bb gun that has ever been made. I did find a Daisy BB gun model 5170 and a BB rifle model 1170 along with a BB rifle model 107 but "NO" model 170. However I suggest you search the web for "Daisy Air gun Repair" or "Air gun repair" and locate someone near you who can help you.
One that you have to manually pump the forarm up to build enough pressure in the air tank to fire the gun.
Are you asking about a gun or a rifle. Which model are you asking about. Daisy had made over a 100 different BB guns and rifles
This model was made by Daisy Air gun it's a model 1894. I suggest you do a search on the web for air gun repair ( there are several people who repair airguns.) locate one who repairs Daisy and send it to them.