I have a B9200 HST that does not want to move. Sometimes it will go forward or reverse very slowly no matter what range it's in. The FEL also will not respond. I have read posts about the suction screen and tried to find it but so far no luck. When I change the filter and oil I know I need to check the suction screen so untill my manuals come in can someone tell me where to look? Appreciate any info anyone can provide.