Purchased a 4000/3200 watt gen. from Harbor Freight on 08-09-2019. Never fully used till 08-09-2020. Started and warmed up every month or two. When finally using it to run a small tree trimmer it ran for about 30 min. then just died. took to local shop and was told coil was bad. No help from customer service. Only 90 day warranty? I understand warranty is warranty but some people do not use them everyday. User's recommendation: Be careful buying generators from Harbor Freight. Pay extra for extended warranty or buy name brand.