2002 Johnson 90 HP. Bombadier. runs then difficult to start again if shut off

[puff tentacle]

When I get boat started I will run her to fishing grounds and she runs good but if I shut it down it won't start up again or extremely difficult . Its easier to start up when cold. Anything I could check or replace to fix this issue. Thanks

 

[flyingscott]

Need a model#

 

[puff tentacle]

Sorry, I don't have it . I just trailered the boat out to the island . Will get it posted by the weekend . Thank you. BTW , I am really not a DIY guy, unfortunately I am not that handy. I can change my plugs, water separator filter, and gear oil. I won't trust myself to anything else. Just curious , aside from what I just mentioned , is there anything else I should be changing as preventive maintenance????? Thanks a lot, much appreciated